3121332997 has 2 divisors, whose sum is σ = 3121332998. Its totient is φ = 3121332996.

The previous prime is 3121332983. The next prime is 3121333009. The reversal of 3121332997 is 7992331213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2850598881 + 270734116 = 53391^2 + 16454^2 .

It is an emirp because it is prime and its reverse (7992331213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3121332997 - 2¹⁵ = 3121300229 is a prime.

It is a super-2 number, since 2×3121332997² = 19485439356322004018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121332197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560666498 + 1560666499.

It is an arithmetic number, because the mean of its divisors is an integer number (1560666499).

Almost surely, 2^3121332997 is an apocalyptic number.

It is an amenable number.

3121332997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121332997 is an equidigital number, since it uses as much as digits as its factorization.

3121332997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 40.

The square root of 3121332997 is about 55868.8911380922. The cubic root of 3121332997 is about 1461.4367849154.

The spelling of 3121332997 in words is "three billion, one hundred twenty-one million, three hundred thirty-two thousand, nine hundred ninety-seven".