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31054223040 = 263532348149
BaseRepresentation
bin11100111010111110…
…011101011011000000
32222011012222222111220
4130322332131123000
51002044340114130
622133251435040
72146360353261
oct347276353300
988135888456
1031054223040
1112196332445
126027bb5a80
132c0b908909
14170846c968
15c1b46b410
hex73af9d6c0

31054223040 has 56 divisors (see below), whose sum is σ = 98597161200. Its totient is φ = 8281125888.

The previous prime is 31054223027. The next prime is 31054223077. The reversal of 31054223040 is 4032245013.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31054223040.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16173115 + ... + 16175034.

Almost surely, 231054223040 is an apocalyptic number.

31054223040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31054223040 is an abundant number, since it is smaller than the sum of its proper divisors (67542938160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31054223040 is a wasteful number, since it uses less digits than its factorization.

31054223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32348169 (or 32348159 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 31054223040 its reverse (4032245013), we get a palindrome (35086468053).

The spelling of 31054223040 in words is "thirty-one billion, fifty-four million, two hundred twenty-three thousand, forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 240 320 480 960 32348149 64696298 97044447 129392596 161740745 194088894 258785192 323481490 388177788 485222235 517570384 646962980 776355576 970444470 1035140768 1293925960 1552711152 1940888940 2070281536 2587851920 3105422304 3881777880 5175703840 6210844608 7763555760 10351407680 15527111520 31054223040