9973631 has 2 divisors, whose sum is σ = 9973632. Its totient is φ = 9973630.

The previous prime is 9973627. The next prime is 9973669. The reversal of 9973631 is 1363799.

It is an a-pointer prime, because the next prime (9973669) can be obtained adding 9973631 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9973631 - 2² = 9973627 is a prime.

It is a super-2 number, since 2×9973631² = 198946630648322, which contains 22 as substring.

It is a Chen prime.

It is equal to p₆₆₂₉₇₈ and since 9973631 and 662978 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9973331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986815 + 4986816.

It is an arithmetic number, because the mean of its divisors is an integer number (4986816).

Almost surely, 2^9973631 is an apocalyptic number.

9973631 is a deficient number, since it is larger than the sum of its proper divisors (1).

9973631 is an equidigital number, since it uses as much as digits as its factorization.

9973631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 38.

The square root of 9973631 is about 3158.1056030475. The cubic root of 9973631 is about 215.2539346833.

The spelling of 9973631 in words is "nine million, nine hundred seventy-three thousand, six hundred thirty-one".