31675332697 has 4 divisors (see below), whose sum is σ = 31676148900. Its totient is φ = 31674516496.

The previous prime is 31675332673. The next prime is 31675332709. The reversal of 31675332697 is 79623357613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79623357613 = 43 ⋅1851705991.

It can be written as a sum of positive squares in 2 ways, for example, as 23600333376 + 8074999321 = 153624^2 + 89861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31675332697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31675332617) 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, 346822 + ... + 428527.

It is an arithmetic number, because the mean of its divisors is an integer number (7919037225).

Almost surely, 2^31675332697 is an apocalyptic number.

It is an amenable number.

31675332697 is a deficient number, since it is larger than the sum of its proper divisors (816203).

31675332697 is an equidigital number, since it uses as much as digits as its factorization.

31675332697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816202.

The product of its digits is 4286520, while the sum is 52.

The spelling of 31675332697 in words is "thirty-one billion, six hundred seventy-five million, three hundred thirty-two thousand, six hundred ninety-seven".