3131233121197 has 2 divisors, whose sum is σ = 3131233121198. Its totient is φ = 3131233121196.

The previous prime is 3131233121131. The next prime is 3131233121257. The reversal of 3131233121197 is 7911213321313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2182905781156 + 948327340041 = 1477466^2 + 973821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131233121197 is a prime.

It is a super-2 number, since 2×3131233121197² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131233121297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565616560598 + 1565616560599.

It is an arithmetic number, because the mean of its divisors is an integer number (1565616560599).

Almost surely, 2^{3131233121197} is an apocalyptic number.

It is an amenable number.

3131233121197 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131233121197 is an equidigital number, since it uses as much as digits as its factorization.

3131233121197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The spelling of 3131233121197 in words is "three trillion, one hundred thirty-one billion, two hundred thirty-three million, one hundred twenty-one thousand, one hundred ninety-seven".