31683261504 has 28 divisors (see below), whose sum is σ = 83828629904. Its totient is φ = 10561087104.

The previous prime is 31683261503. The next prime is 31683261517. The reversal of 31683261504 is 40516238613.

It is a super-4 number, since 4×31683261504⁴ (a number of 43 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (31683261503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82508302 + ... + 82508685.

Almost surely, 2^31683261504 is an apocalyptic number.

It is an amenable number.

31683261504 is an abundant number, since it is smaller than the sum of its proper divisors (52145368400).

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

31683261504 is a wasteful number, since it uses less digits than its factorization.

31683261504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165017002 (or 165016992 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 31683261504 in words is "thirty-one billion, six hundred eighty-three million, two hundred sixty-one thousand, five hundred four".