2131311233 has 8 divisors (see below), whose sum is σ = 2257567200. Its totient is φ = 2005153600.

The previous prime is 2131311179. The next prime is 2131311251. The reversal of 2131311233 is 3321131312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131311233 is a prime.

It is a super-3 number, since 3×2131311233³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131311253) 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, 22658 + ... + 69108.

It is an arithmetic number, because the mean of its divisors is an integer number (282195900).

Almost surely, 2^2131311233 is an apocalyptic number.

It is an amenable number.

2131311233 is a deficient number, since it is larger than the sum of its proper divisors (126255967).

2131311233 is a wasteful number, since it uses less digits than its factorization.

2131311233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49167.

The product of its digits is 324, while the sum is 20.

The square root of 2131311233 is about 46166.1264673570. The cubic root of 2131311233 is about 1286.9123183133.

Adding to 2131311233 its reverse (3321131312), we get a palindrome (5452442545).

The spelling of 2131311233 in words is "two billion, one hundred thirty-one million, three hundred eleven thousand, two hundred thirty-three".