253613331 has 12 divisors (see below), whose sum is σ = 375265800. Its totient is φ = 164951520.

The previous prime is 253613317. The next prime is 253613333. The reversal of 253613331 is 133316352.

It is a happy number.

It is not a de Polignac number, because 253613331 - 2¹⁵ = 253580563 is a prime.

It is a super-2 number, since 2×253613331² = 128639443321831122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253613295 and 253613304.

It is not an unprimeable number, because it can be changed into a prime (253613333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343281 + ... + 344018.

It is an arithmetic number, because the mean of its divisors is an integer number (31272150).

Almost surely, 2^253613331 is an apocalyptic number.

253613331 is a deficient number, since it is larger than the sum of its proper divisors (121652469).

253613331 is a wasteful number, since it uses less digits than its factorization.

253613331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687346 (or 687343 counting only the distinct ones).

The product of its digits is 4860, while the sum is 27.

The square root of 253613331 is about 15925.2419447869. The cubic root of 253613331 is about 632.9810271112.

Adding to 253613331 its reverse (133316352), we get a palindrome (386929683).

The spelling of 253613331 in words is "two hundred fifty-three million, six hundred thirteen thousand, three hundred thirty-one".