253031431 has 4 divisors (see below), whose sum is σ = 253425592. Its totient is φ = 252637272.

The previous prime is 253031413. The next prime is 253031473. The reversal of 253031431 is 134130352.

253031431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 253031431 - 2⁵ = 253031399 is a prime.

It is a super-2 number, since 2×253031431² = 128049810147815522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253001431) 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, 196116 + ... + 197401.

It is an arithmetic number, because the mean of its divisors is an integer number (63356398).

Almost surely, 2^253031431 is an apocalyptic number.

253031431 is a deficient number, since it is larger than the sum of its proper divisors (394161).

253031431 is an equidigital number, since it uses as much as digits as its factorization.

253031431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394160.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 253031431 is about 15906.9617149222. The cubic root of 253031431 is about 632.4965445295.

Adding to 253031431 its reverse (134130352), we get a palindrome (387161783).

The spelling of 253031431 in words is "two hundred fifty-three million, thirty-one thousand, four hundred thirty-one".