31125373493 has 2 divisors, whose sum is σ = 31125373494. Its totient is φ = 31125373492.

The previous prime is 31125373463. The next prime is 31125373523. The reversal of 31125373493 is 39437352113.

It is a balanced prime because it is at equal distance from previous prime (31125373463) and next prime (31125373523).

It can be written as a sum of positive squares in only one way, i.e., 31119429649 + 5943844 = 176407^2 + 2438^2 .

It is a cyclic number.

It is not a de Polignac number, because 31125373493 - 2¹⁸ = 31125111349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31125373493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31125373453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15562686746 + 15562686747.

It is an arithmetic number, because the mean of its divisors is an integer number (15562686747).

Almost surely, 2^31125373493 is an apocalyptic number.

It is an amenable number.

31125373493 is a deficient number, since it is larger than the sum of its proper divisors (1).

31125373493 is an equidigital number, since it uses as much as digits as its factorization.

31125373493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 41.

The spelling of 31125373493 in words is "thirty-one billion, one hundred twenty-five million, three hundred seventy-three thousand, four hundred ninety-three".