33131432243 has 32 divisors (see below), whose sum is σ = 43266908160. Its totient is φ = 24619829760.

The previous prime is 33131432227. The next prime is 33131432251. The reversal of 33131432243 is 34223413133.

It is not a de Polignac number, because 33131432243 - 2⁴ = 33131432227 is a prime.

It is a super-2 number, since 2×33131432243² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33131432743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 718658 + ... + 763368.

It is an arithmetic number, because the mean of its divisors is an integer number (1352090880).

Almost surely, 2^33131432243 is an apocalyptic number.

33131432243 is a deficient number, since it is larger than the sum of its proper divisors (10135475917).

33131432243 is a wasteful number, since it uses less digits than its factorization.

33131432243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45227.

The product of its digits is 15552, while the sum is 29.

Adding to 33131432243 its reverse (34223413133), we get a palindrome (67354845376).

The spelling of 33131432243 in words is "thirty-three billion, one hundred thirty-one million, four hundred thirty-two thousand, two hundred forty-three".