3125031491 has 2 divisors, whose sum is σ = 3125031492. Its totient is φ = 3125031490.

The previous prime is 3125031467. The next prime is 3125031529. The reversal of 3125031491 is 1941305213.

It is a weak prime.

It is an emirp because it is prime and its reverse (1941305213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3125031491 - 2¹⁴ = 3125015107 is a prime.

It is not a weakly prime, because it can be changed into another prime (3125031431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562515745 + 1562515746.

It is an arithmetic number, because the mean of its divisors is an integer number (1562515746).

Almost surely, 2^3125031491 is an apocalyptic number.

3125031491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3125031491 is an equidigital number, since it uses as much as digits as its factorization.

3125031491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 3125031491 is about 55901.9811008519. The cubic root of 3125031491 is about 1462.0137800362.

The spelling of 3125031491 in words is "three billion, one hundred twenty-five million, thirty-one thousand, four hundred ninety-one".