33504313131 has 12 divisors (see below), whose sum is σ = 48404958160. Its totient is φ = 22331667600.

The previous prime is 33504313121. The next prime is 33504313151. The reversal of 33504313131 is 13131340533.

33504313131 is a `hidden beast` number, since 335 + 0 + 4 + 313 + 13 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-33504313131 is a prime.

It is a super-2 number, since 2×33504313131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33504313095 and 33504313104.

It is not an unprimeable number, because it can be changed into a prime (33504313121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331396 + ... + 420513.

Almost surely, 2^33504313131 is an apocalyptic number.

33504313131 is a deficient number, since it is larger than the sum of its proper divisors (14900645029).

33504313131 is a wasteful number, since it uses less digits than its factorization.

33504313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756866 (or 756863 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

Adding to 33504313131 its reverse (13131340533), we get a palindrome (46635653664).

The spelling of 33504313131 in words is "thirty-three billion, five hundred four million, three hundred thirteen thousand, one hundred thirty-one".