31711864806 has 48 divisors (see below), whose sum is σ = 70097573520. Its totient is φ = 10358150400.

The previous prime is 31711864781. The next prime is 31711864831. The reversal of 31711864806 is 60846811713.

It is an interprime number because it is at equal distance from previous prime (31711864781) and next prime (31711864831).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 284706 + ... + 380106.

It is an arithmetic number, because the mean of its divisors is an integer number (1460366115).

Almost surely, 2^31711864806 is an apocalyptic number.

31711864806 is an abundant number, since it is smaller than the sum of its proper divisors (38385708714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31711864806 is a wasteful number, since it uses less digits than its factorization.

31711864806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95781 (or 95778 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

It can be divided in two parts, 317118 and 64806, that added together give a square (381924 = 618²).

The spelling of 31711864806 in words is "thirty-one billion, seven hundred eleven million, eight hundred sixty-four thousand, eight hundred six".