231399262 has 4 divisors (see below), whose sum is σ = 347098896. Its totient is φ = 115699630.

The previous prime is 231399247. The next prime is 231399263. The reversal of 231399262 is 262993132.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231399263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57849814 + ... + 57849817.

It is an arithmetic number, because the mean of its divisors is an integer number (86774724).

Almost surely, 2^231399262 is an apocalyptic number.

231399262 is a deficient number, since it is larger than the sum of its proper divisors (115699634).

231399262 is a wasteful number, since it uses less digits than its factorization.

231399262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115699633.

The product of its digits is 34992, while the sum is 37.

The square root of 231399262 is about 15211.8132384013. The cubic root of 231399262 is about 613.9325453665.

The spelling of 231399262 in words is "two hundred thirty-one million, three hundred ninety-nine thousand, two hundred sixty-two".