165953031 has 8 divisors (see below), whose sum is σ = 234286704. Its totient is φ = 104127360.

The previous prime is 165953023. The next prime is 165953033. The reversal of 165953031 is 130359561.

165953031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165953031 - 2³ = 165953023 is a prime.

It is a super-2 number, since 2×165953031² = 55080816996173922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165952983 and 165953001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165953033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626940 + ... + 1627041.

It is an arithmetic number, because the mean of its divisors is an integer number (29285838).

Almost surely, 2^165953031 is an apocalyptic number.

165953031 is a deficient number, since it is larger than the sum of its proper divisors (68333673).

165953031 is a wasteful number, since it uses less digits than its factorization.

165953031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254001.

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 165953031 is about 12882.2758470699. The cubic root of 165953031 is about 549.5346267290.

It can be divided in two parts, 1659530 and 31, that added together give a palindrome (1659561).

The spelling of 165953031 in words is "one hundred sixty-five million, nine hundred fifty-three thousand, thirty-one".