231296634216 has 128 divisors (see below), whose sum is σ = 679138560000. Its totient is φ = 72735122880.

The previous prime is 231296634181. The next prime is 231296634251. The reversal of 231296634216 is 612436692132.

231296634216 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 9 + 6 + 634 + 2 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (231296634181) and next prime (231296634251).

It is a nude number because it is divisible by every one of its digits.

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, 862951 + ... + 1098761.

It is an arithmetic number, because the mean of its divisors is an integer number (5305770000).

Almost surely, 2^231296634216 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 231296634216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339569280000).

231296634216 is an abundant number, since it is smaller than the sum of its proper divisors (447841925784).

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

231296634216 is a wasteful number, since it uses less digits than its factorization.

231296634216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236084 (or 236074 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The spelling of 231296634216 in words is "two hundred thirty-one billion, two hundred ninety-six million, six hundred thirty-four thousand, two hundred sixteen".