33231493 has 2 divisors, whose sum is σ = 33231494. Its totient is φ = 33231492.

The previous prime is 33231469. The next prime is 33231503. The reversal of 33231493 is 39413233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32798529 + 432964 = 5727^2 + 658^2 .

It is a cyclic number.

It is not a de Polignac number, because 33231493 - 2¹⁷ = 33100421 is a prime.

It is a super-2 number, since 2×33231493² = 2208664254018098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33231403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16615746 + 16615747.

It is an arithmetic number, because the mean of its divisors is an integer number (16615747).

Almost surely, 2^33231493 is an apocalyptic number.

It is an amenable number.

33231493 is a deficient number, since it is larger than the sum of its proper divisors (1).

33231493 is an equidigital number, since it uses as much as digits as its factorization.

33231493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 28.

The square root of 33231493 is about 5764.6763135496. The cubic root of 33231493 is about 321.5017079807.

The spelling of 33231493 in words is "thirty-three million, two hundred thirty-one thousand, four hundred ninety-three".