3121122131 has 2 divisors, whose sum is σ = 3121122132. Its totient is φ = 3121122130.

The previous prime is 3121122113. The next prime is 3121122139. The reversal of 3121122131 is 1312211213.

Together with previous prime (3121122113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1312211213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3121122131 - 2¹⁴ = 3121105747 is a prime.

It is a super-2 number, since 2×3121122131² = 19482806713235962322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3121122139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560561065 + 1560561066.

It is an arithmetic number, because the mean of its divisors is an integer number (1560561066).

Almost surely, 2^3121122131 is an apocalyptic number.

3121122131 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121122131 is an equidigital number, since it uses as much as digits as its factorization.

3121122131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 3121122131 is about 55867.0039558235. The cubic root of 3121122131 is about 1461.4038743748.

Adding to 3121122131 its reverse (1312211213), we get a palindrome (4433333344).

The spelling of 3121122131 in words is "three billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred thirty-one".