253015031 has 4 divisors (see below), whose sum is σ = 253263864. Its totient is φ = 252766200.

The previous prime is 253015027. The next prime is 253015033. The reversal of 253015031 is 130510352.

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 253015031 - 2² = 253015027 is a prime.

It is a super-2 number, since 2×253015031² = 128033211823861922, 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 = 253014994 and 253015012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253015033) 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, 122885 + ... + 124926.

It is an arithmetic number, because the mean of its divisors is an integer number (63315966).

Almost surely, 2^253015031 is an apocalyptic number.

253015031 is a deficient number, since it is larger than the sum of its proper divisors (248833).

253015031 is a wasteful number, since it uses less digits than its factorization.

253015031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248832.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 253015031 is about 15906.4462090060. The cubic root of 253015031 is about 632.4828793399.

Adding to 253015031 its reverse (130510352), we get a palindrome (383525383).

The spelling of 253015031 in words is "two hundred fifty-three million, fifteen thousand, thirty-one".