3121233131 has 16 divisors (see below), whose sum is σ = 3226053600. Its totient is φ = 3018048768.

The previous prime is 3121233119. The next prime is 3121233169. The reversal of 3121233131 is 1313321213.

It is a cyclic number.

It is not a de Polignac number, because 3121233131 - 2¹⁸ = 3120970987 is a prime.

It is a super-2 number, since 2×3121233131² = 19484192516104126322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121233191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1939055 + ... + 1940663.

It is an arithmetic number, because the mean of its divisors is an integer number (201628350).

Almost surely, 2^3121233131 is an apocalyptic number.

3121233131 is a deficient number, since it is larger than the sum of its proper divisors (104820469).

3121233131 is a wasteful number, since it uses less digits than its factorization.

3121233131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078.

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

The square root of 3121233131 is about 55867.9973777475. The cubic root of 3121233131 is about 1461.4211986896.

Adding to 3121233131 its reverse (1313321213), we get a palindrome (4434554344).

The spelling of 3121233131 in words is "three billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred thirty-one".