33481831 has 2 divisors, whose sum is σ = 33481832. Its totient is φ = 33481830.

The previous prime is 33481817. The next prime is 33481837. The reversal of 33481831 is 13818433.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33481831 is a prime.

It is a super-2 number, since 2×33481831² = 2242066014225122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33481793 and 33481802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33481837) 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, 16740915 + 16740916.

It is an arithmetic number, because the mean of its divisors is an integer number (16740916).

Almost surely, 2^33481831 is an apocalyptic number.

33481831 is a deficient number, since it is larger than the sum of its proper divisors (1).

33481831 is an equidigital number, since it uses as much as digits as its factorization.

33481831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 33481831 is about 5786.3486759787. The cubic root of 33481831 is about 322.3069966710.

The spelling of 33481831 in words is "thirty-three million, four hundred eighty-one thousand, eight hundred thirty-one".