31952946689 has 4 divisors (see below), whose sum is σ = 31953447360. Its totient is φ = 31952446020.

The previous prime is 31952946659. The next prime is 31952946761. The reversal of 31952946689 is 98664925913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31952946689 - 2²⁸ = 31684511233 is a prime.

It is a super-2 number, since 2×31952946689² (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 (31952946659) 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, 137717 + ... + 287874.

It is an arithmetic number, because the mean of its divisors is an integer number (7988361840).

Almost surely, 2^31952946689 is an apocalyptic number.

It is an amenable number.

31952946689 is a deficient number, since it is larger than the sum of its proper divisors (500671).

31952946689 is an equidigital number, since it uses as much as digits as its factorization.

31952946689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500670.

The product of its digits is 25194240, while the sum is 62.

The spelling of 31952946689 in words is "thirty-one billion, nine hundred fifty-two million, nine hundred forty-six thousand, six hundred eighty-nine".