253813331 has 4 divisors (see below), whose sum is σ = 255370632. Its totient is φ = 252256032.

The previous prime is 253813289. The next prime is 253813369. The reversal of 253813331 is 133318352.

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 253813331 - 2¹⁸ = 253551187 is a prime.

It is a super-2 number, since 2×253813331² = 128842413986631122, 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 = 253813294 and 253813303.

It is not an unprimeable number, because it can be changed into a prime (253813831) 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, 778406 + ... + 778731.

It is an arithmetic number, because the mean of its divisors is an integer number (63842658).

Almost surely, 2^253813331 is an apocalyptic number.

253813331 is a deficient number, since it is larger than the sum of its proper divisors (1557301).

253813331 is a wasteful number, since it uses less digits than its factorization.

253813331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557300.

The product of its digits is 6480, while the sum is 29.

The square root of 253813331 is about 15931.5200467501. The cubic root of 253813331 is about 633.1473734430.

The spelling of 253813331 in words is "two hundred fifty-three million, eight hundred thirteen thousand, three hundred thirty-one".