253235131 has 4 divisors (see below), whose sum is σ = 253330000. Its totient is φ = 253140264.

The previous prime is 253235123. The next prime is 253235149. The reversal of 253235131 is 131532352.

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 253235131 - 2³ = 253235123 is a prime.

It is a super-2 number, since 2×253235131² = 128256063145174322, 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 = 253235096 and 253235105.

It is not an unprimeable number, because it can be changed into a prime (253235161) 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, 43311 + ... + 48808.

It is an arithmetic number, because the mean of its divisors is an integer number (63332500).

Almost surely, 2^253235131 is an apocalyptic number.

253235131 is a deficient number, since it is larger than the sum of its proper divisors (94869).

253235131 is an equidigital number, since it uses as much as digits as its factorization.

253235131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94868.

The product of its digits is 2700, while the sum is 25.

The square root of 253235131 is about 15913.3632837311. The cubic root of 253235131 is about 632.6662269908. Note that the first 3 decimals are identical.

Adding to 253235131 its reverse (131532352), we get a palindrome (384767483).

The spelling of 253235131 in words is "two hundred fifty-three million, two hundred thirty-five thousand, one hundred thirty-one".