201331011023 has 2 divisors, whose sum is σ = 201331011024. Its totient is φ = 201331011022.

The previous prime is 201331010891. The next prime is 201331011029. The reversal of 201331011023 is 320110133102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201331011023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201331010992 and 201331011010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201331011029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100665505511 + 100665505512.

It is an arithmetic number, because the mean of its divisors is an integer number (100665505512).

Almost surely, 2^201331011023 is an apocalyptic number.

201331011023 is a deficient number, since it is larger than the sum of its proper divisors (1).

201331011023 is an equidigital number, since it uses as much as digits as its factorization.

201331011023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 201331011023 its reverse (320110133102), we get a palindrome (521441144125).

The spelling of 201331011023 in words is "two hundred one billion, three hundred thirty-one million, eleven thousand, twenty-three".