253085431 has 4 divisors (see below), whose sum is σ = 253141632. Its totient is φ = 253029232.

The previous prime is 253085429. The next prime is 253085467. The reversal of 253085431 is 134580352.

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

It is a cyclic number.

It is not a de Polignac number, because 253085431 - 2¹ = 253085429 is a prime.

It is a super-2 number, since 2×253085431² = 128104470768911522, 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 = 253085393 and 253085402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253085411) 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, 20695 + ... + 30568.

It is an arithmetic number, because the mean of its divisors is an integer number (63285408).

Almost surely, 2^253085431 is an apocalyptic number.

253085431 is a deficient number, since it is larger than the sum of its proper divisors (56201).

253085431 is an equidigital number, since it uses as much as digits as its factorization.

253085431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56200.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 253085431 is about 15908.6589943967. The cubic root of 253085431 is about 632.5415354935.

The spelling of 253085431 in words is "two hundred fifty-three million, eighty-five thousand, four hundred thirty-one".