33131022131 has 16 divisors (see below), whose sum is σ = 34439718240. Its totient is φ = 31833661440.

The previous prime is 33131022121. The next prime is 33131022137. The reversal of 33131022131 is 13122013133.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33131022131 is a prime.

It is a super-2 number, since 2×33131022131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33131022137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13913561 + ... + 13915941.

It is an arithmetic number, because the mean of its divisors is an integer number (2152482390).

Almost surely, 2^33131022131 is an apocalyptic number.

33131022131 is a deficient number, since it is larger than the sum of its proper divisors (1308696109).

33131022131 is a wasteful number, since it uses less digits than its factorization.

33131022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 33131022131 its reverse (13122013133), we get a palindrome (46253035264).

The spelling of 33131022131 in words is "thirty-three billion, one hundred thirty-one million, twenty-two thousand, one hundred thirty-one".