1232887657 has 2 divisors, whose sum is σ = 1232887658. Its totient is φ = 1232887656.

The previous prime is 1232887631. The next prime is 1232887673. The reversal of 1232887657 is 7567882321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1223670361 + 9217296 = 34981^2 + 3036^2 .

It is an emirp because it is prime and its reverse (7567882321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1232887657 - 2¹¹ = 1232885609 is a prime.

It is the 35113-rd Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232887657.

It is not a weakly prime, because it can be changed into another prime (1232887697) by changing a digit.

It is a nontrivial repunit in base 35112.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616443828 + 616443829.

It is an arithmetic number, because the mean of its divisors is an integer number (616443829).

Almost surely, 2^1232887657 is an apocalyptic number.

It is an amenable number.

1232887657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232887657 is an equidigital number, since it uses as much as digits as its factorization.

1232887657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The square root of 1232887657 is about 35112.5000106800. The cubic root of 1232887657 is about 1072.2790845475.

The spelling of 1232887657 in words is "one billion, two hundred thirty-two million, eight hundred eighty-seven thousand, six hundred fifty-seven".