31312203220001 has 8 divisors (see below), whose sum is σ = 34158872595744. Its totient is φ = 28465551418720.

The previous prime is 31312203219949. The next prime is 31312203220043. The reversal of 31312203220001 is 10002230221313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31312203220001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31312203220091) 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, 519755 + ... + 7930608.

It is an arithmetic number, because the mean of its divisors is an integer number (4269859074468).

Almost surely, 2^{31312203220001} is an apocalyptic number.

It is an amenable number.

31312203220001 is a deficient number, since it is larger than the sum of its proper divisors (2846669375743).

31312203220001 is a wasteful number, since it uses less digits than its factorization.

31312203220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8787231.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31312203220001 its reverse (10002230221313), we get a palindrome (41314433441314).

The spelling of 31312203220001 in words is "thirty-one trillion, three hundred twelve billion, two hundred three million, two hundred twenty thousand, one".