231308894 has 4 divisors (see below), whose sum is σ = 346963344. Its totient is φ = 115654446.

The previous prime is 231308881. The next prime is 231308933. The reversal of 231308894 is 498803132.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57827222 + ... + 57827225.

It is an arithmetic number, because the mean of its divisors is an integer number (86740836).

Almost surely, 2^231308894 is an apocalyptic number.

231308894 is a deficient number, since it is larger than the sum of its proper divisors (115654450).

231308894 is a wasteful number, since it uses less digits than its factorization.

231308894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115654449.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 231308894 is about 15208.8426252624. The cubic root of 231308894 is about 613.8526155812.

The spelling of 231308894 in words is "two hundred thirty-one million, three hundred eight thousand, eight hundred ninety-four".