30511164 has 12 divisors (see below), whose sum is σ = 71192744. Its totient is φ = 10170384.

The previous prime is 30511127. The next prime is 30511181. The reversal of 30511164 is 46111503.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×30511164² = 1861862257269792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30511164.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271287 + ... + 1271310.

Almost surely, 2^30511164 is an apocalyptic number.

It is an amenable number.

30511164 is an abundant number, since it is smaller than the sum of its proper divisors (40681580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30511164 is a wasteful number, since it uses less digits than its factorization.

30511164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542604 (or 2542602 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 30511164 is about 5523.6911571883. The cubic root of 30511164 is about 312.4781049193.

Adding to 30511164 its reverse (46111503), we get a palindrome (76622667).

The spelling of 30511164 in words is "thirty million, five hundred eleven thousand, one hundred sixty-four".