631039 has 2 divisors, whose sum is σ = 631040. Its totient is φ = 631038.

The previous prime is 631013. The next prime is 631061. The reversal of 631039 is 930136.

It is an a-pointer prime, because the next prime (631061) can be obtained adding 631039 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631039 - 2⁷ = 630911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315519 + 315520.

It is an arithmetic number, because the mean of its divisors is an integer number (315520).

2⁶³¹⁰³⁹ is an apocalyptic number.

631039 is a deficient number, since it is larger than the sum of its proper divisors (1).

631039 is an equidigital number, since it uses as much as digits as its factorization.

631039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 631039 is about 794.3796321659. The cubic root of 631039 is about 85.7732896646.

The spelling of 631039 in words is "six hundred thirty-one thousand, thirty-nine".