253102631 has 4 divisors (see below), whose sum is σ = 261267264. Its totient is φ = 244938000.

The previous prime is 253102583. The next prime is 253102637. The reversal of 253102631 is 136201352.

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 253102631 - 2²² = 248908327 is a prime.

It is a super-2 number, since 2×253102631² = 128121883638244322, 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 = 253102597 and 253102606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253102637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4082270 + ... + 4082331.

It is an arithmetic number, because the mean of its divisors is an integer number (65316816).

Almost surely, 2^253102631 is an apocalyptic number.

253102631 is a deficient number, since it is larger than the sum of its proper divisors (8164633).

253102631 is an equidigital number, since it uses as much as digits as its factorization.

253102631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8164632.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 253102631 is about 15909.1995713172. The cubic root of 253102631 is about 632.5558646049. Note that the first 3 decimals are identical.

Adding to 253102631 its reverse (136201352), we get a palindrome (389303983).

The spelling of 253102631 in words is "two hundred fifty-three million, one hundred two thousand, six hundred thirty-one".