231004197 has 8 divisors (see below), whose sum is σ = 342228480. Its totient is φ = 154002780.

The previous prime is 231004181. The next prime is 231004229. The reversal of 231004197 is 791400132.

It is not a de Polignac number, because 231004197 - 2⁴ = 231004181 is a prime.

It is a super-2 number, since 2×231004197² = 106725878063229618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8555711 = 231004197 / (2 + 3 + 1 + 0 + 0 + 4 + 1 + 9 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 231004197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231004097) 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 7 ways as a sum of consecutive naturals, for example, 4277829 + ... + 4277882.

It is an arithmetic number, because the mean of its divisors is an integer number (42778560).

Almost surely, 2^231004197 is an apocalyptic number.

231004197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

231004197 is a deficient number, since it is larger than the sum of its proper divisors (111224283).

231004197 is an equidigital number, since it uses as much as digits as its factorization.

231004197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8555720 (or 8555714 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 231004197 is about 15198.8222241067. The cubic root of 231004197 is about 613.5829599496.

The spelling of 231004197 in words is "two hundred thirty-one million, four thousand, one hundred ninety-seven".