3131220312001 has 4 divisors (see below), whose sum is σ = 3131420495152. Its totient is φ = 3131020128852.

The previous prime is 3131220311987. The next prime is 3131220312029. The reversal of 3131220312001 is 1002130221313.

3131220312001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-3131220312001 is a prime.

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 3131220312001.

It is not an unprimeable number, because it can be changed into a prime (3131220312301) 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, 100068111 + ... + 100099396.

It is an arithmetic number, because the mean of its divisors is an integer number (782855123788).

Almost surely, 2^{3131220312001} is an apocalyptic number.

It is an amenable number.

3131220312001 is a deficient number, since it is larger than the sum of its proper divisors (200183151).

3131220312001 is a wasteful number, since it uses less digits than its factorization.

3131220312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200183150.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 3131220312001 its reverse (1002130221313), we get a palindrome (4133350533314).

The spelling of 3131220312001 in words is "three trillion, one hundred thirty-one billion, two hundred twenty million, three hundred twelve thousand, one".