231202413 has 24 divisors (see below), whose sum is σ = 372055320. Its totient is φ = 137370240.

The previous prime is 231202409. The next prime is 231202421. The reversal of 231202413 is 314202132.

231202413 is a `hidden beast` number, since 231 + 20 + 2 + 413 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5391684 + 225810729 = 2322^2 + 15027^2 .

It is not a de Polignac number, because 231202413 - 2² = 231202409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231206413) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 30678 + ... + 37463.

It is an arithmetic number, because the mean of its divisors is an integer number (15502305).

Almost surely, 2^231202413 is an apocalyptic number.

It is an amenable number.

231202413 is a deficient number, since it is larger than the sum of its proper divisors (140852907).

231202413 is a wasteful number, since it uses less digits than its factorization.

231202413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68189 (or 68186 counting only the distinct ones).

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

The square root of 231202413 is about 15205.3415943214. The cubic root of 231202413 is about 613.7584072528.

Adding to 231202413 its reverse (314202132), we get a palindrome (545404545).

The spelling of 231202413 in words is "two hundred thirty-one million, two hundred two thousand, four hundred thirteen".