7990031 has 8 divisors (see below), whose sum is σ = 9148704. Its totient is φ = 6835680.

The previous prime is 7990001. The next prime is 7990057. The reversal of 7990031 is 1300997.

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

It is a cyclic number.

It is not a de Polignac number, because 7990031 - 2¹⁸ = 7727887 is a prime.

It is a super-2 number, since 2×7990031² = 127681190761922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7989976 and 7990003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990001) 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, 5981 + ... + 7193.

It is an arithmetic number, because the mean of its divisors is an integer number (1143588).

Almost surely, 2^7990031 is an apocalyptic number.

7990031 is a deficient number, since it is larger than the sum of its proper divisors (1158673).

7990031 is a wasteful number, since it uses less digits than its factorization.

7990031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 7990031 is about 2826.6642885210. The cubic root of 7990031 is about 199.9168904688.

The spelling of 7990031 in words is "seven million, nine hundred ninety thousand, thirty-one".