3121322131 has 2 divisors, whose sum is σ = 3121322132. Its totient is φ = 3121322130.

The previous prime is 3121322119. The next prime is 3121322159. The reversal of 3121322131 is 1312231213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3121322131 - 2⁷ = 3121322003 is a prime.

It is a super-2 number, since 2×3121322131² = 19485303690940762322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3121322099 and 3121322108.

It is not a weakly prime, because it can be changed into another prime (3121322231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560661065 + 1560661066.

It is an arithmetic number, because the mean of its divisors is an integer number (1560661066).

Almost surely, 2^3121322131 is an apocalyptic number.

3121322131 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121322131 is an equidigital number, since it uses as much as digits as its factorization.

3121322131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 3121322131 is about 55868.7938924763. The cubic root of 3121322131 is about 1461.4350890598.

Adding to 3121322131 its reverse (1312231213), we get a palindrome (4433553344).

The spelling of 3121322131 in words is "three billion, one hundred twenty-one million, three hundred twenty-two thousand, one hundred thirty-one".