31220405114201 has 2 divisors, whose sum is σ = 31220405114202. Its totient is φ = 31220405114200.

The previous prime is 31220405114179. The next prime is 31220405114257. The reversal of 31220405114201 is 10241150402213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31208714098576 + 11691015625 = 5586476^2 + 108125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31220405114201 is a prime.

It is not a weakly prime, because it can be changed into another prime (31220405114281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15610202557100 + 15610202557101.

It is an arithmetic number, because the mean of its divisors is an integer number (15610202557101).

Almost surely, 2^{31220405114201} is an apocalyptic number.

It is an amenable number.

31220405114201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31220405114201 is an equidigital number, since it uses as much as digits as its factorization.

31220405114201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 31220405114201 its reverse (10241150402213), we get a palindrome (41461555516414).

The spelling of 31220405114201 in words is "thirty-one trillion, two hundred twenty billion, four hundred five million, one hundred fourteen thousand, two hundred one".