31950831764 has 12 divisors (see below), whose sum is σ = 59203011924. Its totient is φ = 15035685504.

The previous prime is 31950831763. The next prime is 31950831779. The reversal of 31950831764 is 46713805913.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23314846864 + 8635984900 = 152692^2 + 92930^2 .

It is a super-2 number, since 2×31950831764² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31950831763) 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, 234932519 + ... + 234932654.

It is an arithmetic number, because the mean of its divisors is an integer number (4933584327).

Almost surely, 2^31950831764 is an apocalyptic number.

31950831764 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31950831764 is a deficient number, since it is larger than the sum of its proper divisors (27252180160).

31950831764 is a wasteful number, since it uses less digits than its factorization.

31950831764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469865194 (or 469865192 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 31950831764 in words is "thirty-one billion, nine hundred fifty million, eight hundred thirty-one thousand, seven hundred sixty-four".