1310031197 has 2 divisors, whose sum is σ = 1310031198. Its totient is φ = 1310031196.

The previous prime is 1310031161. The next prime is 1310031199. The reversal of 1310031197 is 7911300131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1269211876 + 40819321 = 35626^2 + 6389^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310031197 - 2¹⁰ = 1310030173 is a prime.

It is a super-2 number, since 2×1310031197² = 3432363474226505618, which contains 22 as substring.

Together with 1310031199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310031199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655015598 + 655015599.

It is an arithmetic number, because the mean of its divisors is an integer number (655015599).

Almost surely, 2^1310031197 is an apocalyptic number.

It is an amenable number.

1310031197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310031197 is an equidigital number, since it uses as much as digits as its factorization.

1310031197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 1310031197 is about 36194.3531092904. The cubic root of 1310031197 is about 1094.1928671124.

The spelling of 1310031197 in words is "one billion, three hundred ten million, thirty-one thousand, one hundred ninety-seven".