9902031 has 8 divisors (see below), whose sum is σ = 13239600. Its totient is φ = 6582912.

The previous prime is 9902023. The next prime is 9902047. The reversal of 9902031 is 1302099.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9902031 - 2³ = 9902023 is a prime.

It is a super-2 number, since 2×9902031² = 196100435849922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9901992 and 9902010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3306 + ... + 5543.

It is an arithmetic number, because the mean of its divisors is an integer number (1654950).

Almost surely, 2^9902031 is an apocalyptic number.

9902031 is a deficient number, since it is larger than the sum of its proper divisors (3337569).

9902031 is a wasteful number, since it uses less digits than its factorization.

9902031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9225.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 9902031 is about 3146.7492750456. The cubic root of 9902031 is about 214.7375994751.

The spelling of 9902031 in words is "nine million, nine hundred two thousand, thirty-one".