2231311031331 has 8 divisors (see below), whose sum is σ = 3044269314240. Its totient is φ = 1452946717992.

The previous prime is 2231311031269. The next prime is 2231311031359. The reversal of 2231311031331 is 1331301131322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2231311031331 - 2⁷ = 2231311031203 is a prime.

It is a super-3 number, since 3×2231311031331³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2231311031371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8648492241 + ... + 8648492498.

It is an arithmetic number, because the mean of its divisors is an integer number (380533664280).

Almost surely, 2^{2231311031331} is an apocalyptic number.

2231311031331 is a deficient number, since it is larger than the sum of its proper divisors (812958282909).

2231311031331 is a wasteful number, since it uses less digits than its factorization.

2231311031331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17296984785.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 2231311031331 its reverse (1331301131322), we get a palindrome (3562612162653).

Subtracting from 2231311031331 its reverse (1331301131322), we obtain a palindrome (900009900009).

The spelling of 2231311031331 in words is "two trillion, two hundred thirty-one billion, three hundred eleven million, thirty-one thousand, three hundred thirty-one".