31201541520223 has 2 divisors, whose sum is σ = 31201541520224. Its totient is φ = 31201541520222.

The previous prime is 31201541520221. The next prime is 31201541520229. The reversal of 31201541520223 is 32202514510213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31201541520223 - 2¹ = 31201541520221 is a prime.

Together with 31201541520221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31201541520221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600770760111 + 15600770760112.

It is an arithmetic number, because the mean of its divisors is an integer number (15600770760112).

Almost surely, 2^{31201541520223} is an apocalyptic number.

31201541520223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31201541520223 is an equidigital number, since it uses as much as digits as its factorization.

31201541520223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 31201541520223 in words is "thirty-one trillion, two hundred one billion, five hundred forty-one million, five hundred twenty thousand, two hundred twenty-three".