31753478506 has 32 divisors (see below), whose sum is σ = 50081328000. Its totient is φ = 15070461120.

The previous prime is 31753478489. The next prime is 31753478507. The reversal of 31753478506 is 60587435713.

It is a self number, because there is not a number n which added to its sum of digits gives 31753478506.

It is not an unprimeable number, because it can be changed into a prime (31753478507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13562896 + ... + 13565236.

It is an arithmetic number, because the mean of its divisors is an integer number (1565041500).

Almost surely, 2^31753478506 is an apocalyptic number.

31753478506 is a deficient number, since it is larger than the sum of its proper divisors (18327849494).

31753478506 is a wasteful number, since it uses less digits than its factorization.

31753478506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4494.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 31753478506 in words is "thirty-one billion, seven hundred fifty-three million, four hundred seventy-eight thousand, five hundred six".