1232198391 has 16 divisors (see below), whose sum is σ = 1655105760. Its totient is φ = 815400960.

The previous prime is 1232198381. The next prime is 1232198441. The reversal of 1232198391 is 1938912321.

It is a de Polignac number, because none of the positive numbers 2^k-1232198391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232198321) 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 in 15 ways as a sum of consecutive naturals, for example, 239971 + ... + 245051.

It is an arithmetic number, because the mean of its divisors is an integer number (103444110).

Almost surely, 2^1232198391 is an apocalyptic number.

1232198391 is a deficient number, since it is larger than the sum of its proper divisors (422907369).

1232198391 is a wasteful number, since it uses less digits than its factorization.

1232198391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5666.

The product of its digits is 23328, while the sum is 39.

The square root of 1232198391 is about 35102.6835298955. The cubic root of 1232198391 is about 1072.0792222468.

The spelling of 1232198391 in words is "one billion, two hundred thirty-two million, one hundred ninety-eight thousand, three hundred ninety-one".