253165235431 has 8 divisors (see below), whose sum is σ = 255444431760. Its totient is φ = 250892580288.

The previous prime is 253165235377. The next prime is 253165235447. The reversal of 253165235431 is 134532561352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253165235431 - 2⁷ = 253165235303 is a prime.

It is a super-2 number, since 2×253165235431² (a number of 24 digits) 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 (253165235471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1557526 + ... + 1712371.

It is an arithmetic number, because the mean of its divisors is an integer number (31930553970).

Almost surely, 2^253165235431 is an apocalyptic number.

253165235431 is a deficient number, since it is larger than the sum of its proper divisors (2279196329).

253165235431 is a wasteful number, since it uses less digits than its factorization.

253165235431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270593.

The product of its digits is 324000, while the sum is 40.

Adding to 253165235431 its reverse (134532561352), we get a palindrome (387697796783).

The spelling of 253165235431 in words is "two hundred fifty-three billion, one hundred sixty-five million, two hundred thirty-five thousand, four hundred thirty-one".