31311640654 has 8 divisors (see below), whose sum is σ = 53677098288. Its totient is φ = 13419274560.

The previous prime is 31311640649. The next prime is 31311640667. The reversal of 31311640654 is 45604611313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118272867 + ... + 1118272894.

It is an arithmetic number, because the mean of its divisors is an integer number (6709637286).

Almost surely, 2^31311640654 is an apocalyptic number.

31311640654 is a deficient number, since it is larger than the sum of its proper divisors (22365457634).

31311640654 is a wasteful number, since it uses less digits than its factorization.

31311640654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236545770.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 31311640654 in words is "thirty-one billion, three hundred eleven million, six hundred forty thousand, six hundred fifty-four".