2331213231 has 32 divisors (see below), whose sum is σ = 3346237440. Its totient is φ = 1439817984.

The previous prime is 2331213229. The next prime is 2331213239. The reversal of 2331213231 is 1323121332.

It is not a de Polignac number, because 2331213231 - 2¹ = 2331213229 is a prime.

It is a super-2 number, since 2×2331213231² = 10869110256778918722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2331213198 and 2331213207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331213239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592890 + ... + 596808.

It is an arithmetic number, because the mean of its divisors is an integer number (104569920).

Almost surely, 2^2331213231 is an apocalyptic number.

2331213231 is a deficient number, since it is larger than the sum of its proper divisors (1015024209).

2331213231 is a wasteful number, since it uses less digits than its factorization.

2331213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215.

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

The square root of 2331213231 is about 48282.6390227378. The cubic root of 2331213231 is about 1325.9505662135.

Adding to 2331213231 its reverse (1323121332), we get a palindrome (3654334563).

The spelling of 2331213231 in words is "two billion, three hundred thirty-one million, two hundred thirteen thousand, two hundred thirty-one".