31662031068 has 36 divisors (see below), whose sum is σ = 80055419080. Its totient is φ = 10551262176.

The previous prime is 31662031061. The next prime is 31662031087. The reversal of 31662031068 is 86013026613.

31662031068 is a `hidden beast` number, since 3 + 16 + 620 + 3 + 10 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×31662031068² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31662031061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28098 + ... + 253206.

Almost surely, 2^31662031068 is an apocalyptic number.

It is an amenable number.

31662031068 is an abundant number, since it is smaller than the sum of its proper divisors (48393388012).

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

31662031068 is a wasteful number, since it uses less digits than its factorization.

31662031068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229026 (or 229021 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 31662031068 in words is "thirty-one billion, six hundred sixty-two million, thirty-one thousand, sixty-eight".