231221752494 has 32 divisors (see below), whose sum is σ = 473883172224. Its totient is φ = 75172497120.

The previous prime is 231221752493. The next prime is 231221752547. The reversal of 231221752494 is 494257122132.

231221752494 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231221752493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470209 + ... + 826764.

It is an arithmetic number, because the mean of its divisors is an integer number (14808849132).

Almost surely, 2^231221752494 is an apocalyptic number.

231221752494 is an abundant number, since it is smaller than the sum of its proper divisors (242661419730).

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

231221752494 is a wasteful number, since it uses less digits than its factorization.

231221752494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297712.

The product of its digits is 241920, while the sum is 42.

The spelling of 231221752494 in words is "two hundred thirty-one billion, two hundred twenty-one million, seven hundred fifty-two thousand, four hundred ninety-four".