123201200131 has 4 divisors (see below), whose sum is σ = 123536898592. Its totient is φ = 122865501672.

The previous prime is 123201200069. The next prime is 123201200149. The reversal of 123201200131 is 131002102321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131002102321 = 9467 ⋅13837763.

It is a cyclic number.

It is not a de Polignac number, because 123201200131 - 2³³ = 114611265539 is a prime.

It is a super-2 number, since 2×123201200131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123201200231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167848680 + ... + 167849413.

It is an arithmetic number, because the mean of its divisors is an integer number (30884224648).

Almost surely, 2^123201200131 is an apocalyptic number.

123201200131 is a deficient number, since it is larger than the sum of its proper divisors (335698461).

123201200131 is an equidigital number, since it uses as much as digits as its factorization.

123201200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335698460.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123201200131 its reverse (131002102321), we get a palindrome (254203302452).

The spelling of 123201200131 in words is "one hundred twenty-three billion, two hundred one million, two hundred thousand, one hundred thirty-one".