122431447 has 2 divisors, whose sum is σ = 122431448. Its totient is φ = 122431446.

The previous prime is 122431427. The next prime is 122431457. The reversal of 122431447 is 744134221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122431447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122431427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61215723 + 61215724.

It is an arithmetic number, because the mean of its divisors is an integer number (61215724).

Almost surely, 2^122431447 is an apocalyptic number.

122431447 is a deficient number, since it is larger than the sum of its proper divisors (1).

122431447 is an equidigital number, since it uses as much as digits as its factorization.

122431447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 28.

The square root of 122431447 is about 11064.8744683345. The cubic root of 122431447 is about 496.5515335028.

Adding to 122431447 its reverse (744134221), we get a palindrome (866565668).

The spelling of 122431447 in words is "one hundred twenty-two million, four hundred thirty-one thousand, four hundred forty-seven".