109086571631 has 4 divisors (see below), whose sum is σ = 109088631264. Its totient is φ = 109084512000.

The previous prime is 109086571513. The next prime is 109086571639. The reversal of 109086571631 is 136175680901.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109086571631 is a prime.

It is a super-2 number, since 2×109086571631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109086571639) 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, 948215 + ... + 1057016.

It is an arithmetic number, because the mean of its divisors is an integer number (27272157816).

Almost surely, 2^109086571631 is an apocalyptic number.

109086571631 is a deficient number, since it is larger than the sum of its proper divisors (2059633).

109086571631 is an equidigital number, since it uses as much as digits as its factorization.

109086571631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059632.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 109086571631 in words is "one hundred nine billion, eighty-six million, five hundred seventy-one thousand, six hundred thirty-one".