33490031 has 2 divisors, whose sum is σ = 33490032. Its totient is φ = 33490030.

The previous prime is 33490007. The next prime is 33490043. The reversal of 33490031 is 13009433.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33490031 - 2²² = 29295727 is a prime.

It is a super-2 number, since 2×33490031² = 2243164352761922, 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 = 33489979 and 33490006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33490091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16745015 + 16745016.

It is an arithmetic number, because the mean of its divisors is an integer number (16745016).

Almost surely, 2^33490031 is an apocalyptic number.

33490031 is a deficient number, since it is larger than the sum of its proper divisors (1).

33490031 is an equidigital number, since it uses as much as digits as its factorization.

33490031 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 23.

The square root of 33490031 is about 5787.0571968834. The cubic root of 33490031 is about 322.3333064791. Note that the first 4 decimals are identical.

Adding to 33490031 its reverse (13009433), we get a palindrome (46499464).

The spelling of 33490031 in words is "thirty-three million, four hundred ninety thousand, thirty-one".