231373426455 has 20 divisors (see below), whose sum is σ = 414758291112. Its totient is φ = 123399160560.

The previous prime is 231373426433. The next prime is 231373426457. The reversal of 231373426455 is 554624373132.

It is a happy number.

231373426455 is a `hidden beast` number, since 2 + 313 + 73 + 4 + 264 + 5 + 5 = 666.

It is not a de Polignac number, because 231373426455 - 2⁸ = 231373426199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 231373426455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231373426457) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 285645801 + ... + 285646610.

Almost surely, 2^231373426455 is an apocalyptic number.

231373426455 is a deficient number, since it is larger than the sum of its proper divisors (183384864657).

231373426455 is an equidigital number, since it uses as much as digits as its factorization.

231373426455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571292428 (or 571292419 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

Adding to 231373426455 its reverse (554624373132), we get a palindrome (785997799587).

The spelling of 231373426455 in words is "two hundred thirty-one billion, three hundred seventy-three million, four hundred twenty-six thousand, four hundred fifty-five".