231551431354442 has 16 divisors (see below), whose sum is σ = 348026083164000. Its totient is φ = 115542740820432.

The previous prime is 231551431354409. The next prime is 231551431354513. The reversal of 231551431354442 is 244453134155132.

It is a super-3 number, since 3×231551431354442³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 127926128 + ... + 129723540.

It is an arithmetic number, because the mean of its divisors is an integer number (21751630197750).

Almost surely, 2^{231551431354442} is an apocalyptic number.

231551431354442 is a deficient number, since it is larger than the sum of its proper divisors (116474651809558).

231551431354442 is a wasteful number, since it uses less digits than its factorization.

231551431354442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926997.

The product of its digits is 3456000, while the sum is 47.

The spelling of 231551431354442 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, four hundred thirty-one million, three hundred fifty-four thousand, four hundred forty-two".