231340865536 has 144 divisors (see below), whose sum is σ = 536065213320. Its totient is φ = 98966568960.

The previous prime is 231340865533. The next prime is 231340865543. The reversal of 231340865536 is 635568043132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231340865531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6492826 + ... + 6528358.

Almost surely, 2^231340865536 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 231340865536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268032606660).

231340865536 is an abundant number, since it is smaller than the sum of its proper divisors (304724347784).

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

231340865536 is a wasteful number, since it uses less digits than its factorization.

231340865536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35600 (or 35563 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 231340865536 in words is "two hundred thirty-one billion, three hundred forty million, eight hundred sixty-five thousand, five hundred thirty-six".