3131033201123 has 4 divisors (see below), whose sum is σ = 3131200735368. Its totient is φ = 3130865666880.

The previous prime is 3131033201069. The next prime is 3131033201167. The reversal of 3131033201123 is 3211023301313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131033201123 is a prime.

It is a super-2 number, since 2×3131033201123² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131033261123) 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 3 ways as a sum of consecutive naturals, for example, 83739086 + ... + 83776467.

It is an arithmetic number, because the mean of its divisors is an integer number (782800183842).

Almost surely, 2^{3131033201123} is an apocalyptic number.

3131033201123 is a deficient number, since it is larger than the sum of its proper divisors (167534245).

3131033201123 is a wasteful number, since it uses less digits than its factorization.

3131033201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167534244.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 3131033201123 its reverse (3211023301313), we get a palindrome (6342056502436).

The spelling of 3131033201123 in words is "three trillion, one hundred thirty-one billion, thirty-three million, two hundred one thousand, one hundred twenty-three".