33125315131 has 8 divisors (see below), whose sum is σ = 33641017344. Its totient is φ = 32613595560.

The previous prime is 33125315123. The next prime is 33125315137. The reversal of 33125315131 is 13151352133.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33125315131 - 2³ = 33125315123 is a prime.

It is a super-2 number, since 2×33125315131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33125315131.

It is not an unprimeable number, because it can be changed into a prime (33125315137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978895 + ... + 1012168.

It is an arithmetic number, because the mean of its divisors is an integer number (4205127168).

Almost surely, 2^33125315131 is an apocalyptic number.

33125315131 is a deficient number, since it is larger than the sum of its proper divisors (515702213).

33125315131 is a wasteful number, since it uses less digits than its factorization.

33125315131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991321.

The product of its digits is 4050, while the sum is 28.

Adding to 33125315131 its reverse (13151352133), we get a palindrome (46276667264).

The spelling of 33125315131 in words is "thirty-three billion, one hundred twenty-five million, three hundred fifteen thousand, one hundred thirty-one".