231325358040 has 192 divisors, whose sum is σ = 861263020800. Its totient is φ = 52747934976.

The previous prime is 231325358029. The next prime is 231325358057. The reversal of 231325358040 is 40853523132.

231325358040 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 2 + 535 + 80 + 40 = 666.

It is a super-2 number, since 2×231325358040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 231325357986 and 231325358004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 946339 + ... + 1165421.

It is an arithmetic number, because the mean of its divisors is an integer number (4485744900).

Almost surely, 2^231325358040 is an apocalyptic number.

231325358040 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 231325358040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430631510400).

231325358040 is an abundant number, since it is smaller than the sum of its proper divisors (629937662760).

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

231325358040 is a wasteful number, since it uses less digits than its factorization.

231325358040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219526 (or 219519 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 231325358040 in words is "two hundred thirty-one billion, three hundred twenty-five million, three hundred fifty-eight thousand, forty".