32131164 has 48 divisors (see below), whose sum is σ = 82131840. Its totient is φ = 9716160.

The previous prime is 32131111. The next prime is 32131181. The reversal of 32131164 is 46113123.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 32131164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7459 + ... + 10949.

It is an arithmetic number, because the mean of its divisors is an integer number (1711080).

Almost surely, 2^32131164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32131164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41065920).

32131164 is an abundant number, since it is smaller than the sum of its proper divisors (50000676).

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

32131164 is a wasteful number, since it uses less digits than its factorization.

32131164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570 (or 3568 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 32131164 is about 5668.4357630655. The cubic root of 32131164 is about 317.9133896482.

Adding to 32131164 its reverse (46113123), we get a palindrome (78244287).

The spelling of 32131164 in words is "thirty-two million, one hundred thirty-one thousand, one hundred sixty-four".