1133430431 has 4 divisors (see below), whose sum is σ = 1295349072. Its totient is φ = 971511792.

The previous prime is 1133430407. The next prime is 1133430451. The reversal of 1133430431 is 1340343311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1133430431 is a prime.

It is a super-2 number, since 2×1133430431² = 2569329083833691522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1133430397 and 1133430406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133430451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80959310 + ... + 80959323.

It is an arithmetic number, because the mean of its divisors is an integer number (323837268).

Almost surely, 2^1133430431 is an apocalyptic number.

1133430431 is a deficient number, since it is larger than the sum of its proper divisors (161918641).

1133430431 is an equidigital number, since it uses as much as digits as its factorization.

1133430431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161918640.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1133430431 is about 33666.4585455613. The cubic root of 1133430431 is about 1042.6333754253.

Adding to 1133430431 its reverse (1340343311), we get a palindrome (2473773742).

The spelling of 1133430431 in words is "one billion, one hundred thirty-three million, four hundred thirty thousand, four hundred thirty-one".