231500045040 has 160 divisors (see below), whose sum is σ = 784095814656. Its totient is φ = 56034862080.

The previous prime is 231500045003. The next prime is 231500045057. The reversal of 231500045040 is 40540005132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 231500045040.

It is a congruent number.

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, 1656777 + ... + 1791063.

Almost surely, 2^231500045040 is an apocalyptic number.

231500045040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231500045040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392047907328).

231500045040 is an abundant number, since it is smaller than the sum of its proper divisors (552595769616).

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

231500045040 is a wasteful number, since it uses less digits than its factorization.

231500045040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134967 (or 134961 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The spelling of 231500045040 in words is "two hundred thirty-one billion, five hundred million, forty-five thousand, forty".