123200431 has 2 divisors, whose sum is σ = 123200432. Its totient is φ = 123200430.

The previous prime is 123200383. The next prime is 123200477. The reversal of 123200431 is 134002321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123200431 - 2¹³ = 123192239 is a prime.

It is a super-2 number, since 2×123200431² = 30356692397171522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123200131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61600215 + 61600216.

It is an arithmetic number, because the mean of its divisors is an integer number (61600216).

Almost surely, 2^123200431 is an apocalyptic number.

123200431 is a deficient number, since it is larger than the sum of its proper divisors (1).

123200431 is an equidigital number, since it uses as much as digits as its factorization.

123200431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123200431 is about 11099.5689555946. The cubic root of 123200431 is about 497.5889671957.

Adding to 123200431 its reverse (134002321), we get a palindrome (257202752).

The spelling of 123200431 in words is "one hundred twenty-three million, two hundred thousand, four hundred thirty-one".