231673607240 has 64 divisors (see below), whose sum is σ = 527782469760. Its totient is φ = 91511895040.

The previous prime is 231673607173. The next prime is 231673607279. The reversal of 231673607240 is 42706376132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8010005 + ... + 8038875.

It is an arithmetic number, because the mean of its divisors is an integer number (8246601090).

Almost surely, 2^231673607240 is an apocalyptic number.

231673607240 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 231673607240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263891234880).

231673607240 is an abundant number, since it is smaller than the sum of its proper divisors (296108862520).

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

231673607240 is a wasteful number, since it uses less digits than its factorization.

231673607240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31382 (or 31378 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 41.

The spelling of 231673607240 in words is "two hundred thirty-one billion, six hundred seventy-three million, six hundred seven thousand, two hundred forty".