31855490468 has 6 divisors (see below), whose sum is σ = 55747108326. Its totient is φ = 15927745232.

The previous prime is 31855490431. The next prime is 31855490489. The reversal of 31855490468 is 86409455813.

It can be written as a sum of positive squares in only one way, i.e., 22461616384 + 9393874084 = 149872^2 + 96922^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3981936305 + ... + 3981936312.

It is an arithmetic number, because the mean of its divisors is an integer number (9291184721).

Almost surely, 2^31855490468 is an apocalyptic number.

It is an amenable number.

31855490468 is a deficient number, since it is larger than the sum of its proper divisors (23891617858).

31855490468 is a wasteful number, since it uses less digits than its factorization.

31855490468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963872621 (or 7963872619 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 31855490468 in words is "thirty-one billion, eight hundred fifty-five million, four hundred ninety thousand, four hundred sixty-eight".