231145022 has 32 divisors (see below), whose sum is σ = 381412800. Its totient is φ = 104570368.

The previous prime is 231144983. The next prime is 231145069. The reversal of 231145022 is 220541132.

231145022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231144985 and 231145003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353648 + ... + 354300.

It is an arithmetic number, because the mean of its divisors is an integer number (11919150).

Almost surely, 2^231145022 is an apocalyptic number.

231145022 is a deficient number, since it is larger than the sum of its proper divisors (150267778).

231145022 is a wasteful number, since it uses less digits than its factorization.

231145022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 231145022 is about 15203.4542785513. The cubic root of 231145022 is about 613.7076189655.

Adding to 231145022 its reverse (220541132), we get a palindrome (451686154).

The spelling of 231145022 in words is "two hundred thirty-one million, one hundred forty-five thousand, twenty-two".