231313451 has 4 divisors (see below), whose sum is σ = 231376992. Its totient is φ = 231249912.

The previous prime is 231313417. The next prime is 231313457. The reversal of 231313451 is 154313132.

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 231313451 - 2¹⁴ = 231297067 is a prime.

It is a super-2 number, since 2×231313451² = 107011825227058802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231313457) 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, 25955 + ... + 33708.

It is an arithmetic number, because the mean of its divisors is an integer number (57844248).

Almost surely, 2^231313451 is an apocalyptic number.

231313451 is a deficient number, since it is larger than the sum of its proper divisors (63541).

231313451 is an equidigital number, since it uses as much as digits as its factorization.

231313451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63540.

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

The square root of 231313451 is about 15208.9924386857. The cubic root of 231313451 is about 613.8566467103.

Adding to 231313451 its reverse (154313132), we get a palindrome (385626583).

The spelling of 231313451 in words is "two hundred thirty-one million, three hundred thirteen thousand, four hundred fifty-one".