2331321213 has 64 divisors (see below), whose sum is σ = 3562094592. Its totient is φ = 1346526720.

The previous prime is 2331321173. The next prime is 2331321257. The reversal of 2331321213 is 3121231332.

It is not a de Polignac number, because 2331321213 - 2²⁵ = 2297766781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2331321213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331321263) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5035020 + ... + 5035482.

It is an arithmetic number, because the mean of its divisors is an integer number (55657728).

Almost surely, 2^2331321213 is an apocalyptic number.

It is an amenable number.

2331321213 is a deficient number, since it is larger than the sum of its proper divisors (1230773379).

2331321213 is a wasteful number, since it uses less digits than its factorization.

2331321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its digits is 648, while the sum is 21.

The square root of 2331321213 is about 48283.7572378124. The cubic root of 2331321213 is about 1325.9710386127.

Adding to 2331321213 its reverse (3121231332), we get a palindrome (5452552545).

The spelling of 2331321213 in words is "two billion, three hundred thirty-one million, three hundred twenty-one thousand, two hundred thirteen".