33190931 has 2 divisors, whose sum is σ = 33190932. Its totient is φ = 33190930.

The previous prime is 33190921. The next prime is 33190939. The reversal of 33190931 is 13909133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33190931 - 2¹⁰ = 33189907 is a prime.

It is a super-2 number, since 2×33190931² = 2203275801293522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 33190894 and 33190903.

It is not a weakly prime, because it can be changed into another prime (33190939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16595465 + 16595466.

It is an arithmetic number, because the mean of its divisors is an integer number (16595466).

Almost surely, 2^33190931 is an apocalyptic number.

33190931 is a deficient number, since it is larger than the sum of its proper divisors (1).

33190931 is an equidigital number, since it uses as much as digits as its factorization.

33190931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 29.

The square root of 33190931 is about 5761.1570886411. The cubic root of 33190931 is about 321.3708475578.

The spelling of 33190931 in words is "thirty-three million, one hundred ninety thousand, nine hundred thirty-one".