716031731 has 2 divisors, whose sum is σ = 716031732. Its totient is φ = 716031730.

The previous prime is 716031727. The next prime is 716031773. The reversal of 716031731 is 137130617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 716031731 - 2² = 716031727 is a prime.

It is a super-2 number, since 2×716031731² = 1025402879597712722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 716031694 and 716031703.

It is not a weakly prime, because it can be changed into another prime (716031781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358015865 + 358015866.

It is an arithmetic number, because the mean of its divisors is an integer number (358015866).

Almost surely, 2^716031731 is an apocalyptic number.

716031731 is a deficient number, since it is larger than the sum of its proper divisors (1).

716031731 is an equidigital number, since it uses as much as digits as its factorization.

716031731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 716031731 is about 26758.7692355235. The cubic root of 716031731 is about 894.6313020010.

The spelling of 716031731 in words is "seven hundred sixteen million, thirty-one thousand, seven hundred thirty-one".