201523214023 has 2 divisors, whose sum is σ = 201523214024. Its totient is φ = 201523214022.

The previous prime is 201523214003. The next prime is 201523214027. The reversal of 201523214023 is 320412325102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201523214023 - 2⁹ = 201523213511 is a prime.

It is a super-2 number, since 2×201523214023² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201523214027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100761607011 + 100761607012.

It is an arithmetic number, because the mean of its divisors is an integer number (100761607012).

Almost surely, 2^201523214023 is an apocalyptic number.

201523214023 is a deficient number, since it is larger than the sum of its proper divisors (1).

201523214023 is an equidigital number, since it uses as much as digits as its factorization.

201523214023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 201523214023 its reverse (320412325102), we get a palindrome (521935539125).

The spelling of 201523214023 in words is "two hundred one billion, five hundred twenty-three million, two hundred fourteen thousand, twenty-three".