231332002040 has 32 divisors (see below), whose sum is σ = 520512750000. Its totient is φ = 92530001664.

The previous prime is 231332002019. The next prime is 231332002063. The reversal of 231332002040 is 40200233132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704611 + ... + 1835309.

Almost surely, 2^231332002040 is an apocalyptic number.

231332002040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231332002040 is an abundant number, since it is smaller than the sum of its proper divisors (289180747960).

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

231332002040 is a wasteful number, since it uses less digits than its factorization.

231332002040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174959 (or 174955 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 231332002040 its reverse (40200233132), we get a palindrome (271532235172).

The spelling of 231332002040 in words is "two hundred thirty-one billion, three hundred thirty-two million, two thousand, forty".