31143643102 has 64 divisors (see below), whose sum is σ = 58687167168. Its totient is φ = 12176640000.

The previous prime is 31143643061. The next prime is 31143643129. The reversal of 31143643102 is 20134634113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459352 + ... + 522772.

It is an arithmetic number, because the mean of its divisors is an integer number (916986987).

Almost surely, 2^31143643102 is an apocalyptic number.

31143643102 is a deficient number, since it is larger than the sum of its proper divisors (27543524066).

31143643102 is a wasteful number, since it uses less digits than its factorization.

31143643102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63565.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 31143643102 in words is "thirty-one billion, one hundred forty-three million, six hundred forty-three thousand, one hundred two".