231942320898 has 32 divisors (see below), whose sum is σ = 475235994240. Its totient is φ = 75422509440.

The previous prime is 231942320867. The next prime is 231942320903. The reversal of 231942320898 is 898023249132.

It is a self number, because there is not a number n which added to its sum of digits gives 231942320898.

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, 4035136 + ... + 4092212.

It is an arithmetic number, because the mean of its divisors is an integer number (14851124820).

Almost surely, 2^231942320898 is an apocalyptic number.

231942320898 is an abundant number, since it is smaller than the sum of its proper divisors (243293673342).

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

231942320898 is a wasteful number, since it uses less digits than its factorization.

231942320898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73642.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 231942320898 in words is "two hundred thirty-one billion, nine hundred forty-two million, three hundred twenty thousand, eight hundred ninety-eight".