231791898415616 has 240 divisors, whose sum is σ = 581846347450368. Its totient is φ = 90298931036160.

The previous prime is 231791898415591. The next prime is 231791898415661. The reversal of 231791898415616 is 616514898197132.

It is a happy number.

It is a super-2 number, since 2×231791898415616² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231791898415616.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5159278145 + ... + 5159323071.

Almost surely, 2^{231791898415616} 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 231791898415616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290923173725184).

231791898415616 is an abundant number, since it is smaller than the sum of its proper divisors (350054449034752).

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

231791898415616 is a wasteful number, since it uses less digits than its factorization.

231791898415616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56871 (or 56844 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 71.

The spelling of 231791898415616 in words is "two hundred thirty-one trillion, seven hundred ninety-one billion, eight hundred ninety-eight million, four hundred fifteen thousand, six hundred sixteen".