631080071 has 2 divisors, whose sum is σ = 631080072. Its totient is φ = 631080070.

The previous prime is 631080067. The next prime is 631080097. The reversal of 631080071 is 170080136.

It is an a-pointer prime, because the next prime (631080097) can be obtained adding 631080071 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631080071 - 2² = 631080067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631080071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631080011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315540035 + 315540036.

It is an arithmetic number, because the mean of its divisors is an integer number (315540036).

Almost surely, 2^631080071 is an apocalyptic number.

631080071 is a deficient number, since it is larger than the sum of its proper divisors (1).

631080071 is an equidigital number, since it uses as much as digits as its factorization.

631080071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 631080071 is about 25121.3071116931. The cubic root of 631080071 is about 857.7515046788.

The spelling of 631080071 in words is "six hundred thirty-one million, eighty thousand, seventy-one".