231012398 has 4 divisors (see below), whose sum is σ = 346518600. Its totient is φ = 115506198.

The previous prime is 231012373. The next prime is 231012401. The reversal of 231012398 is 893210132.

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

It is a self number, because there is not a number n which added to its sum of digits gives 231012398.

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, 57753098 + ... + 57753101.

It is an arithmetic number, because the mean of its divisors is an integer number (86629650).

Almost surely, 2^231012398 is an apocalyptic number.

231012398 is a deficient number, since it is larger than the sum of its proper divisors (115506202).

231012398 is a wasteful number, since it uses less digits than its factorization.

231012398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115506201.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 231012398 is about 15199.0920123539. The cubic root of 231012398 is about 613.5902209061.

The spelling of 231012398 in words is "two hundred thirty-one million, twelve thousand, three hundred ninety-eight".