165152831 has 4 divisors (see below), whose sum is σ = 165261000. Its totient is φ = 165044664.

The previous prime is 165152759. The next prime is 165152839. The reversal of 165152831 is 138251561.

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-165152831 is a prime.

It is a super-2 number, since 2×165152831² = 54550915174629122, 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 (165152839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51761 + ... + 54858.

It is an arithmetic number, because the mean of its divisors is an integer number (41315250).

Almost surely, 2^165152831 is an apocalyptic number.

165152831 is a deficient number, since it is larger than the sum of its proper divisors (108169).

165152831 is a wasteful number, since it uses less digits than its factorization.

165152831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108168.

The product of its digits is 7200, while the sum is 32.

The square root of 165152831 is about 12851.1801403607. The cubic root of 165152831 is about 548.6499461108.

The spelling of 165152831 in words is "one hundred sixty-five million, one hundred fifty-two thousand, eight hundred thirty-one".