31631903446 has 32 divisors (see below), whose sum is σ = 56117124000. Its totient is φ = 13183034880.

The previous prime is 31631903431. The next prime is 31631903503. The reversal of 31631903446 is 64430913613.

It is a junction number, because it is equal to n+sod(n) for n = 31631903399 and 31631903408.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 328531 + ... + 413758.

It is an arithmetic number, because the mean of its divisors is an integer number (1753660125).

Almost surely, 2^31631903446 is an apocalyptic number.

31631903446 is a deficient number, since it is larger than the sum of its proper divisors (24485220554).

31631903446 is a wasteful number, since it uses less digits than its factorization.

31631903446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742464.

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 31631903446 in words is "thirty-one billion, six hundred thirty-one million, nine hundred three thousand, four hundred forty-six".