231244002413 has 4 divisors (see below), whose sum is σ = 233290409628. Its totient is φ = 229197595200.

The previous prime is 231244002401. The next prime is 231244002439. The reversal of 231244002413 is 314200442132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72169061449 + 159074940964 = 268643^2 + 398842^2 .

It is a cyclic number.

It is not a de Polignac number, because 231244002413 - 2⁴ = 231244002397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231244007413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023203438 + ... + 1023203663.

It is an arithmetic number, because the mean of its divisors is an integer number (58322602407).

Almost surely, 2^231244002413 is an apocalyptic number.

It is an amenable number.

231244002413 is a deficient number, since it is larger than the sum of its proper divisors (2046407215).

231244002413 is a wasteful number, since it uses less digits than its factorization.

231244002413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046407214.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 231244002413 its reverse (314200442132), we get a palindrome (545444444545).

The spelling of 231244002413 in words is "two hundred thirty-one billion, two hundred forty-four million, two thousand, four hundred thirteen".