23131334213 has 4 divisors (see below), whose sum is σ = 24910667628. Its totient is φ = 21352000800.

The previous prime is 23131334173. The next prime is 23131334231. The reversal of 23131334213 is 31243313132.

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 4451825284 + 18679508929 = 66722^2 + 136673^2 .

It is not a de Polignac number, because 23131334213 - 2¹⁰ = 23131333189 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 (23131334243) 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, 889666688 + ... + 889666713.

It is an arithmetic number, because the mean of its divisors is an integer number (6227666907).

Almost surely, 2^23131334213 is an apocalyptic number.

It is an amenable number.

23131334213 is a deficient number, since it is larger than the sum of its proper divisors (1779333415).

23131334213 is a wasteful number, since it uses less digits than its factorization.

23131334213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779333414.

The product of its digits is 3888, while the sum is 26.

Adding to 23131334213 its reverse (31243313132), we get a palindrome (54374647345).

The spelling of 23131334213 in words is "twenty-three billion, one hundred thirty-one million, three hundred thirty-four thousand, two hundred thirteen".