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31230103330 = 2512912419063
BaseRepresentation
bin11101000101011101…
…011000111100100010
32222121110221121220201
4131011131120330202
51002424401301310
622202533255414
72153624332636
oct350535307442
988543847821
1031230103330
1112276640958
126076a9456a
132c391995aa
141723972dc6
15c2bb0de3a
hex745758f22

31230103330 has 16 divisors (see below), whose sum is σ = 56257752384. Its totient is φ = 12482359920.

The previous prime is 31230103319. The next prime is 31230103337. The reversal of 31230103330 is 3330103213.

It is a junction number, because it is equal to n+sod(n) for n = 31230103298 and 31230103307.

It is not an unprimeable number, because it can be changed into a prime (31230103337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1196622 + ... + 1222441.

It is an arithmetic number, because the mean of its divisors is an integer number (3516109524).

Almost surely, 231230103330 is an apocalyptic number.

31230103330 is a deficient number, since it is larger than the sum of its proper divisors (25027649054).

31230103330 is a wasteful number, since it uses less digits than its factorization.

31230103330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420361.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 31230103330 its reverse (3330103213), we get a palindrome (34560206543).

The spelling of 31230103330 in words is "thirty-one billion, two hundred thirty million, one hundred three thousand, three hundred thirty".

Divisors: 1 2 5 10 1291 2582 6455 12910 2419063 4838126 12095315 24190630 3123010333 6246020666 15615051665 31230103330