201200120123831 has 2 divisors, whose sum is σ = 201200120123832. Its totient is φ = 201200120123830.

The previous prime is 201200120123797. The next prime is 201200120123839. The reversal of 201200120123831 is 138321021002102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201200120123831 - 2²⁶ = 201200053014967 is a prime.

It is a super-2 number, since 2×201200120123831² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201200120123831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201200120123839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600060061915 + 100600060061916.

It is an arithmetic number, because the mean of its divisors is an integer number (100600060061916).

Almost surely, 2^{201200120123831} is an apocalyptic number.

201200120123831 is a deficient number, since it is larger than the sum of its proper divisors (1).

201200120123831 is an equidigital number, since it uses as much as digits as its factorization.

201200120123831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 201200120123831 its reverse (138321021002102), we get a palindrome (339521141125933).

The spelling of 201200120123831 in words is "two hundred one trillion, two hundred billion, one hundred twenty million, one hundred twenty-three thousand, eight hundred thirty-one".