231643751542 has 64 divisors (see below), whose sum is σ = 416333905920. Its totient is φ = 94570740000.

The previous prime is 231643751539. The next prime is 231643751551. The reversal of 231643751542 is 245157346132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65452809 + ... + 65456347.

It is an arithmetic number, because the mean of its divisors is an integer number (6505217280).

Almost surely, 2^231643751542 is an apocalyptic number.

231643751542 is a deficient number, since it is larger than the sum of its proper divisors (184690154378).

231643751542 is a wasteful number, since it uses less digits than its factorization.

231643751542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5897.

The product of its digits is 604800, while the sum is 43.

The spelling of 231643751542 in words is "two hundred thirty-one billion, six hundred forty-three million, seven hundred fifty-one thousand, five hundred forty-two".