3131112423021 has 8 divisors (see below), whose sum is σ = 4554345342624. Its totient is φ = 1897643892720.

The previous prime is 3131112422993. The next prime is 3131112423037. The reversal of 3131112423021 is 1203242111313.

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

It is not a de Polignac number, because 3131112423021 - 2⁵ = 3131112422989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131112422982 and 3131112423000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131112424021) 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, 47441097286 + ... + 47441097351.

It is an arithmetic number, because the mean of its divisors is an integer number (569293167828).

Almost surely, 2^{3131112423021} is an apocalyptic number.

It is an amenable number.

3131112423021 is a deficient number, since it is larger than the sum of its proper divisors (1423232919603).

3131112423021 is a wasteful number, since it uses less digits than its factorization.

3131112423021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94882194651.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 3131112423021 its reverse (1203242111313), we get a palindrome (4334354534334).

The spelling of 3131112423021 in words is "three trillion, one hundred thirty-one billion, one hundred twelve million, four hundred twenty-three thousand, twenty-one".