231459398131 has 4 divisors (see below), whose sum is σ = 249263967232. Its totient is φ = 213654829032.

The previous prime is 231459398129. The next prime is 231459398171. The reversal of 231459398131 is 131893954132.

It is a happy number.

231459398131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 231459398131 - 2¹ = 231459398129 is a prime.

It is a super-2 number, since 2×231459398131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231459398171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8902284531 + ... + 8902284556.

It is an arithmetic number, because the mean of its divisors is an integer number (62315991808).

Almost surely, 2^231459398131 is an apocalyptic number.

231459398131 is a deficient number, since it is larger than the sum of its proper divisors (17804569101).

231459398131 is a wasteful number, since it uses less digits than its factorization.

231459398131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17804569100.

The product of its digits is 699840, while the sum is 49.

The spelling of 231459398131 in words is "two hundred thirty-one billion, four hundred fifty-nine million, three hundred ninety-eight thousand, one hundred thirty-one".