3131022331123 has 4 divisors (see below), whose sum is σ = 3267153736848. Its totient is φ = 2994890925400.

The previous prime is 3131022331069. The next prime is 3131022331141. The reversal of 3131022331123 is 3211332201313.

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

It is a cyclic number.

It is not a de Polignac number, because 3131022331123 - 2²⁹ = 3130485460211 is a prime.

It is a super-2 number, since 2×3131022331123² (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 (3131022331823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68065702828 + ... + 68065702873.

It is an arithmetic number, because the mean of its divisors is an integer number (816788434212).

Almost surely, 2^{3131022331123} is an apocalyptic number.

3131022331123 is a deficient number, since it is larger than the sum of its proper divisors (136131405725).

3131022331123 is a wasteful number, since it uses less digits than its factorization.

3131022331123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136131405724.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 3131022331123 its reverse (3211332201313), we get a palindrome (6342354532436).

The spelling of 3131022331123 in words is "three trillion, one hundred thirty-one billion, twenty-two million, three hundred thirty-one thousand, one hundred twenty-three".