31147022667 has 4 divisors (see below), whose sum is σ = 41529363560. Its totient is φ = 20764681776.

The previous prime is 31147022653. The next prime is 31147022693. The reversal of 31147022667 is 76622074113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31147022667 - 2¹⁴ = 31147006283 is a prime.

It is a super-2 number, since 2×31147022667² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31147023667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5191170442 + ... + 5191170447.

It is an arithmetic number, because the mean of its divisors is an integer number (10382340890).

Almost surely, 2^31147022667 is an apocalyptic number.

31147022667 is a deficient number, since it is larger than the sum of its proper divisors (10382340893).

31147022667 is a wasteful number, since it uses less digits than its factorization.

31147022667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10382340892.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 31147022667 in words is "thirty-one billion, one hundred forty-seven million, twenty-two thousand, six hundred sixty-seven".