253308031 has 16 divisors (see below), whose sum is σ = 265059424. Its totient is φ = 241864704.

The previous prime is 253308023. The next prime is 253308053. The reversal of 253308031 is 130803352.

It is a 12-Lehmer number, since φ(253308031) divides (253308031-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 253308031 - 2³ = 253308023 is a prime.

It is a super-2 number, since 2×253308031² = 128329917138193922, 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 = 253307987 and 253308005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253308001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584791 + ... + 585223.

It is an arithmetic number, because the mean of its divisors is an integer number (16566214).

Almost surely, 2^253308031 is an apocalyptic number.

253308031 is a deficient number, since it is larger than the sum of its proper divisors (11751393).

253308031 is a wasteful number, since it uses less digits than its factorization.

253308031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 253308031 is about 15915.6536466461. The cubic root of 253308031 is about 632.7269307101.

The spelling of 253308031 in words is "two hundred fifty-three million, three hundred eight thousand, thirty-one".