253042131 has 4 divisors (see below), whose sum is σ = 337389512. Its totient is φ = 168694752.

The previous prime is 253042123. The next prime is 253042157. The reversal of 253042131 is 131240352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253042131 - 2³ = 253042123 is a prime.

It is a super-2 number, since 2×253042131² = 128060640122042322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253042098 and 253042107.

It is not an unprimeable number, because it can be changed into a prime (253042631) 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, 42173686 + ... + 42173691.

It is an arithmetic number, because the mean of its divisors is an integer number (84347378).

Almost surely, 2^253042131 is an apocalyptic number.

253042131 is a deficient number, since it is larger than the sum of its proper divisors (84347381).

253042131 is an equidigital number, since it uses as much as digits as its factorization.

253042131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84347380.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 253042131 is about 15907.2980420938. The cubic root of 253042131 is about 632.5054599142.

Adding to 253042131 its reverse (131240352), we get a palindrome (384282483).

The spelling of 253042131 in words is "two hundred fifty-three million, forty-two thousand, one hundred thirty-one".