231262313 has 4 divisors (see below), whose sum is σ = 231292740. Its totient is φ = 231231888.

The previous prime is 231262289. The next prime is 231262331. The reversal of 231262313 is 313262132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 182709289 + 48553024 = 13517^2 + 6968^2 .

It is a cyclic number.

It is not a de Polignac number, because 231262313 - 2⁶ = 231262249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231262333) 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, 6983 + ... + 22611.

It is an arithmetic number, because the mean of its divisors is an integer number (57823185).

Almost surely, 2^231262313 is an apocalyptic number.

It is an amenable number.

231262313 is a deficient number, since it is larger than the sum of its proper divisors (30427).

231262313 is a wasteful number, since it uses less digits than its factorization.

231262313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30426.

The product of its digits is 1296, while the sum is 23.

The square root of 231262313 is about 15207.3111693027. The cubic root of 231262313 is about 613.8114069218.

The spelling of 231262313 in words is "two hundred thirty-one million, two hundred sixty-two thousand, three hundred thirteen".