Search a number
-
+
31023340030 = 2519241239877
BaseRepresentation
bin11100111001001000…
…101001100111111110
32222002001212221222201
4130321020221213332
51002013433340110
622130225502114
72145534016324
oct347110514776
988061787881
1031023340030
111217a9595a1
1260197a193a
132c053b4a47
14170430dd14
15c188bab3a
hex7392299fe

31023340030 has 96 divisors (see below), whose sum is σ = 60694945920. Its totient is φ = 11408463360.

The previous prime is 31023340027. The next prime is 31023340031. The reversal of 31023340030 is 3004332013.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023340031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35373952 + ... + 35374828.

It is an arithmetic number, because the mean of its divisors is an integer number (632239020).

Almost surely, 231023340030 is an apocalyptic number.

31023340030 is a deficient number, since it is larger than the sum of its proper divisors (29671605890).

31023340030 is a wasteful number, since it uses less digits than its factorization.

31023340030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 31023340030 its reverse (3004332013), we get a palindrome (34027672043).

The spelling of 31023340030 in words is "thirty-one billion, twenty-three million, three hundred forty thousand, thirty".

Divisors: 1 2 5 10 19 38 41 82 95 190 205 239 361 410 478 722 779 877 1195 1558 1754 1805 2390 3610 3895 4385 4541 7790 8770 9082 9799 14801 16663 19598 22705 29602 33326 35957 45410 48995 71914 74005 83315 86279 97990 148010 166630 172558 179785 186181 209603 316597 359570 372362 419206 431395 633194 683183 862790 930905 1048015 1366366 1582985 1861810 2096030 3165970 3415915 3537439 3982457 6831830 7074878 7964914 8593723 12980477 17187446 17687195 19912285 25960954 35374390 39824570 42968615 64902385 75666683 85937230 129804770 151333366 163280737 326561474 378333415 756666830 816403685 1632807370 3102334003 6204668006 15511670015 31023340030