3131123322101 has 4 divisors (see below), whose sum is σ = 3131266980000. Its totient is φ = 3130979664204.

The previous prime is 3131123322071. The next prime is 3131123322157. The reversal of 3131123322101 is 1012233211313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3131123322101 - 2¹⁰ = 3131123321077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131123322181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71796251 + ... + 71839848.

It is an arithmetic number, because the mean of its divisors is an integer number (782816745000).

Almost surely, 2^{3131123322101} is an apocalyptic number.

It is an amenable number.

3131123322101 is a deficient number, since it is larger than the sum of its proper divisors (143657899).

3131123322101 is a wasteful number, since it uses less digits than its factorization.

3131123322101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143657898.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 3131123322101 its reverse (1012233211313), we get a palindrome (4143356533414).

The spelling of 3131123322101 in words is "three trillion, one hundred thirty-one billion, one hundred twenty-three million, three hundred twenty-two thousand, one hundred one".