165134631 has 4 divisors (see below), whose sum is σ = 220179512. Its totient is φ = 110089752.

The previous prime is 165134623. The next prime is 165134639. The reversal of 165134631 is 136431561.

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

It is an interprime number because it is at equal distance from previous prime (165134623) and next prime (165134639).

It is not a de Polignac number, because 165134631 - 2³ = 165134623 is a prime.

It is a super-2 number, since 2×165134631² = 54538892711012322, which 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 (165134639) 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, 27522436 + ... + 27522441.

It is an arithmetic number, because the mean of its divisors is an integer number (55044878).

Almost surely, 2^165134631 is an apocalyptic number.

165134631 is a deficient number, since it is larger than the sum of its proper divisors (55044881).

165134631 is an equidigital number, since it uses as much as digits as its factorization.

165134631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55044880.

The product of its digits is 6480, while the sum is 30.

The square root of 165134631 is about 12850.4720146771. The cubic root of 165134631 is about 548.6297914541.

The spelling of 165134631 in words is "one hundred sixty-five million, one hundred thirty-four thousand, six hundred thirty-one".