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31312421324 = 2267116837393
BaseRepresentation
bin11101001010010111…
…011010000111001100
32222211012211210222022
4131022113122013030
51003111434440244
622215033505312
72155644122042
oct351227320714
988735753868
1031312421324
1112309055658
12609a572238
132c5025ba72
141730880392
15c33e6e6ee
hex74a5da1cc

31312421324 has 12 divisors (see below), whose sum is σ = 55614599544. Its totient is φ = 15422535744.

The previous prime is 31312421323. The next prime is 31312421353. The reversal of 31312421324 is 42312421313.

It is a junction number, because it is equal to n+sod(n) for n = 31312421293 and 31312421302.

It is not an unprimeable number, because it can be changed into a prime (31312421323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58418429 + ... + 58418964.

It is an arithmetic number, because the mean of its divisors is an integer number (4634549962).

Almost surely, 231312421324 is an apocalyptic number.

It is an amenable number.

31312421324 is a deficient number, since it is larger than the sum of its proper divisors (24302178220).

31312421324 is a wasteful number, since it uses less digits than its factorization.

31312421324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116837464 (or 116837462 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 31312421324 its reverse (42312421313), we get a palindrome (73624842637).

The spelling of 31312421324 in words is "thirty-one billion, three hundred twelve million, four hundred twenty-one thousand, three hundred twenty-four".

Divisors: 1 2 4 67 134 268 116837393 233674786 467349572 7828105331 15656210662 31312421324