231761028356112 has 640 divisors, whose sum is σ = 657645405143040. Its totient is φ = 70101588049920.

The previous prime is 231761028356101. The next prime is 231761028356159. The reversal of 231761028356112 is 211653820167132.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 127 ways as a sum of consecutive naturals, for example, 85426105668 + ... + 85426108380.

It is an arithmetic number, because the mean of its divisors is an integer number (1027570945536).

Almost surely, 2^{231761028356112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231761028356112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328822702571520).

231761028356112 is an abundant number, since it is smaller than the sum of its proper divisors (425884376786928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231761028356112 is a wasteful number, since it uses less digits than its factorization.

231761028356112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151 (or 3145 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 231761028356112 in words is "two hundred thirty-one trillion, seven hundred sixty-one billion, twenty-eight million, three hundred fifty-six thousand, one hundred twelve".