231397298 has 32 divisors (see below), whose sum is σ = 386812800. Its totient is φ = 102936960.

The previous prime is 231397291. The next prime is 231397321. The reversal of 231397298 is 892793132.

It is a happy number.

231397298 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231397291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238811 + ... + 239777.

It is an arithmetic number, because the mean of its divisors is an integer number (12087900).

Almost surely, 2^231397298 is an apocalyptic number.

231397298 is a deficient number, since it is larger than the sum of its proper divisors (155415502).

231397298 is a wasteful number, since it uses less digits than its factorization.

231397298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202.

The product of its digits is 163296, while the sum is 44.

The square root of 231397298 is about 15211.7486831725. The cubic root of 231397298 is about 613.9308084452.

The spelling of 231397298 in words is "two hundred thirty-one million, three hundred ninety-seven thousand, two hundred ninety-eight".