2312221240331 has 4 divisors (see below), whose sum is σ = 2312230654272. Its totient is φ = 2312211826392.

The previous prime is 2312221240319. The next prime is 2312221240333. The reversal of 2312221240331 is 1330421222132.

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

It is a cyclic number.

It is not a de Polignac number, because 2312221240331 - 2¹⁸ = 2312220978187 is a prime.

It is a super-2 number, since 2×2312221240331² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2312221240331.

It is not an unprimeable number, because it can be changed into a prime (2312221240333) 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, 4328396 + ... + 4833161.

It is an arithmetic number, because the mean of its divisors is an integer number (578057663568).

Almost surely, 2^{2312221240331} is an apocalyptic number.

2312221240331 is a deficient number, since it is larger than the sum of its proper divisors (9413941).

2312221240331 is an equidigital number, since it uses as much as digits as its factorization.

2312221240331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9413940.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 2312221240331 its reverse (1330421222132), we get a palindrome (3642642462463).

It can be divided in two parts, 2312221 and 240331, that added together give a palindrome (2552552).

The spelling of 2312221240331 in words is "two trillion, three hundred twelve billion, two hundred twenty-one million, two hundred forty thousand, three hundred thirty-one".