253632131 has 4 divisors (see below), whose sum is σ = 253892712. Its totient is φ = 253371552.

The previous prime is 253632101. The next prime is 253632139. The reversal of 253632131 is 131236352.

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-253632131 is a prime.

It is a super-2 number, since 2×253632131² = 128658515751202322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253632131.

It is not an unprimeable number, because it can be changed into a prime (253632139) 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, 128825 + ... + 130778.

It is an arithmetic number, because the mean of its divisors is an integer number (63473178).

Almost surely, 2^253632131 is an apocalyptic number.

253632131 is a deficient number, since it is larger than the sum of its proper divisors (260581).

253632131 is an equidigital number, since it uses as much as digits as its factorization.

253632131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260580.

The product of its digits is 3240, while the sum is 26.

The square root of 253632131 is about 15925.8321917569. The cubic root of 253632131 is about 632.9966673895.

Adding to 253632131 its reverse (131236352), we get a palindrome (384868483).

It can be divided in two parts, 2536321 and 31, that added together give a palindrome (2536352).

The spelling of 253632131 in words is "two hundred fifty-three million, six hundred thirty-two thousand, one hundred thirty-one".