231022413 has 24 divisors (see below), whose sum is σ = 351097656. Its totient is φ = 146188800.

The previous prime is 231022411. The next prime is 231022417. The reversal of 231022413 is 314220132.

231022413 is a `hidden beast` number, since 231 + 0 + 22 + 413 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 43797924 + 187224489 = 6618^2 + 13683^2 .

It is not a de Polignac number, because 231022413 - 2¹ = 231022411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231022411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5193 + ... + 22113.

It is an arithmetic number, because the mean of its divisors is an integer number (14629069).

Almost surely, 2^231022413 is an apocalyptic number.

It is an amenable number.

231022413 is a deficient number, since it is larger than the sum of its proper divisors (120075243).

231022413 is a wasteful number, since it uses less digits than its factorization.

231022413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17005 (or 17002 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231022413 is about 15199.4214692534. The cubic root of 231022413 is about 613.5990876990.

Adding to 231022413 its reverse (314220132), we get a palindrome (545242545).

The spelling of 231022413 in words is "two hundred thirty-one million, twenty-two thousand, four hundred thirteen".