1232355457 has 2 divisors, whose sum is σ = 1232355458. Its totient is φ = 1232355456.

The previous prime is 1232355451. The next prime is 1232355473. The reversal of 1232355457 is 7545532321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1025024256 + 207331201 = 32016^2 + 14399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232355457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1232355451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616177728 + 616177729.

It is an arithmetic number, because the mean of its divisors is an integer number (616177729).

Almost surely, 2^1232355457 is an apocalyptic number.

It is an amenable number.

1232355457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232355457 is an equidigital number, since it uses as much as digits as its factorization.

1232355457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 37.

The square root of 1232355457 is about 35104.9206949681. The cubic root of 1232355457 is about 1072.1247722822.

Adding to 1232355457 its reverse (7545532321), we get a palindrome (8777887778).

The spelling of 1232355457 in words is "one billion, two hundred thirty-two million, three hundred fifty-five thousand, four hundred fifty-seven".