33130020231 has 24 divisors (see below), whose sum is σ = 59662721664. Its totient is φ = 17210399760.

The previous prime is 33130020169. The next prime is 33130020233. The reversal of 33130020231 is 13202003133.

33130020231 is a `hidden beast` number, since 331 + 300 + 2 + 0 + 2 + 31 = 666.

It is not a de Polignac number, because 33130020231 - 2²⁹ = 32593149319 is a prime.

It is a super-2 number, since 2×33130020231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33130020233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23902641 + ... + 23904026.

It is an arithmetic number, because the mean of its divisors is an integer number (2485946736).

Almost surely, 2^33130020231 is an apocalyptic number.

33130020231 is a deficient number, since it is larger than the sum of its proper divisors (26532701433).

33130020231 is a wasteful number, since it uses less digits than its factorization.

33130020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47806691 (or 47806688 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 33130020231 its reverse (13202003133), we get a palindrome (46332023364).

The spelling of 33130020231 in words is "thirty-three billion, one hundred thirty million, twenty thousand, two hundred thirty-one".