7990231 has 2 divisors, whose sum is σ = 7990232. Its totient is φ = 7990230.

The previous prime is 7990183. The next prime is 7990237. The reversal of 7990231 is 1320997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7990231 - 2¹⁵ = 7957463 is a prime.

It is a super-2 number, since 2×7990231² = 127687582866722, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7990193 and 7990202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7990237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995115 + 3995116.

It is an arithmetic number, because the mean of its divisors is an integer number (3995116).

Almost surely, 2^7990231 is an apocalyptic number.

7990231 is a deficient number, since it is larger than the sum of its proper divisors (1).

7990231 is an equidigital number, since it uses as much as digits as its factorization.

7990231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 7990231 is about 2826.6996656879. The cubic root of 7990231 is about 199.9185585076.

The spelling of 7990231 in words is "seven million, nine hundred ninety thousand, two hundred thirty-one".