33013031131 has 4 divisors (see below), whose sum is σ = 33026829192. Its totient is φ = 32999233072.

The previous prime is 33013031123. The next prime is 33013031143. The reversal of 33013031131 is 13113031033.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33013031131 - 2³ = 33013031123 is a prime.

It is a super-2 number, since 2×33013031131² (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 = 33013031099 and 33013031108.

It is not an unprimeable number, because it can be changed into a prime (33013031111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6895441 + ... + 6900226.

It is an arithmetic number, because the mean of its divisors is an integer number (8256707298).

Almost surely, 2^33013031131 is an apocalyptic number.

33013031131 is a deficient number, since it is larger than the sum of its proper divisors (13798061).

33013031131 is a wasteful number, since it uses less digits than its factorization.

33013031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13798060.

The product of its (nonzero) digits is 243, while the sum is 19.

Adding to 33013031131 its reverse (13113031033), we get a palindrome (46126062164).

The spelling of 33013031131 in words is "thirty-three billion, thirteen million, thirty-one thousand, one hundred thirty-one".