16290331 has 2 divisors, whose sum is σ = 16290332. Its totient is φ = 16290330.

The previous prime is 16290317. The next prime is 16290347. The reversal of 16290331 is 13309261.

16290331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16290331 - 2⁵ = 16290299 is a prime.

It is a super-2 number, since 2×16290331² = 530749768179122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16290296 and 16290305.

It is not a weakly prime, because it can be changed into another prime (16290731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8145165 + 8145166.

It is an arithmetic number, because the mean of its divisors is an integer number (8145166).

Almost surely, 2^16290331 is an apocalyptic number.

16290331 is a deficient number, since it is larger than the sum of its proper divisors (1).

16290331 is an equidigital number, since it uses as much as digits as its factorization.

16290331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 16290331 is about 4036.1282189742. The cubic root of 16290331 is about 253.4992251778.

Adding to 16290331 its reverse (13309261), we get a palindrome (29599592).

The spelling of 16290331 in words is "sixteen million, two hundred ninety thousand, three hundred thirty-one".