231130320222 has 16 divisors (see below), whose sum is σ = 462265620480. Its totient is φ = 77042610072.

The previous prime is 231130320217. The next prime is 231130320227. The reversal of 231130320222 is 222023031132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231130320217) and next prime (231130320227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231130320227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703533 + ... + 978375.

It is an arithmetic number, because the mean of its divisors is an integer number (28891601280).

Almost surely, 2^231130320222 is an apocalyptic number.

231130320222 is an abundant number, since it is smaller than the sum of its proper divisors (231135300258).

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

231130320222 is a wasteful number, since it uses less digits than its factorization.

231130320222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415007.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 231130320222 its reverse (222023031132), we get a palindrome (453153351354).

The spelling of 231130320222 in words is "two hundred thirty-one billion, one hundred thirty million, three hundred twenty thousand, two hundred twenty-two".