631488037 has 2 divisors, whose sum is σ = 631488038. Its totient is φ = 631488036.

The previous prime is 631487959. The next prime is 631488041. The reversal of 631488037 is 730884136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624550081 + 6937956 = 24991^2 + 2634^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631488037 is a prime.

It is a super-2 number, since 2×631488037² = 797554281748226738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631485037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315744018 + 315744019.

It is an arithmetic number, because the mean of its divisors is an integer number (315744019).

Almost surely, 2^631488037 is an apocalyptic number.

It is an amenable number.

631488037 is a deficient number, since it is larger than the sum of its proper divisors (1).

631488037 is an equidigital number, since it uses as much as digits as its factorization.

631488037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 631488037 is about 25129.4257196618. The cubic root of 631488037 is about 857.9362979604.

The spelling of 631488037 in words is "six hundred thirty-one million, four hundred eighty-eight thousand, thirty-seven".