231686548366 has 32 divisors (see below), whose sum is σ = 428857712640. Its totient is φ = 91414352736.

The previous prime is 231686548339. The next prime is 231686548441. The reversal of 231686548366 is 663845686132.

It is a self number, because there is not a number n which added to its sum of digits gives 231686548366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1610446 + ... + 1748401.

It is an arithmetic number, because the mean of its divisors is an integer number (13401803520).

Almost surely, 2^231686548366 is an apocalyptic number.

231686548366 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

231686548366 is a deficient number, since it is larger than the sum of its proper divisors (197171164274).

231686548366 is a wasteful number, since it uses less digits than its factorization.

231686548366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359248.

The product of its digits is 29859840, while the sum is 58.

The spelling of 231686548366 in words is "two hundred thirty-one billion, six hundred eighty-six million, five hundred forty-eight thousand, three hundred sixty-six".