1131432398 has 16 divisors (see below), whose sum is σ = 1744282080. Its totient is φ = 550027296.

The previous prime is 1131432373. The next prime is 1131432403. The reversal of 1131432398 is 8932341311.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114623 + ... + 124101.

It is an arithmetic number, because the mean of its divisors is an integer number (109017630).

Almost surely, 2^1131432398 is an apocalyptic number.

1131432398 is a deficient number, since it is larger than the sum of its proper divisors (612849682).

1131432398 is a wasteful number, since it uses less digits than its factorization.

1131432398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11131.

The product of its digits is 15552, while the sum is 35.

The square root of 1131432398 is about 33636.7715157088. The cubic root of 1131432398 is about 1042.0203570035.

The spelling of 1131432398 in words is "one billion, one hundred thirty-one million, four hundred thirty-two thousand, three hundred ninety-eight".