1130555431 has 4 divisors (see below), whose sum is σ = 1137325392. Its totient is φ = 1123785472.

The previous prime is 1130555429. The next prime is 1130555483. The reversal of 1130555431 is 1345550311.

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

It is a cyclic number.

It is not a de Polignac number, because 1130555431 - 2¹ = 1130555429 is a prime.

It is a super-2 number, since 2×1130555431² = 2556311165127191522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1130555431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130555411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3384730 + ... + 3385063.

It is an arithmetic number, because the mean of its divisors is an integer number (284331348).

Almost surely, 2^1130555431 is an apocalyptic number.

1130555431 is a deficient number, since it is larger than the sum of its proper divisors (6769961).

1130555431 is an equidigital number, since it uses as much as digits as its factorization.

1130555431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6769960.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1130555431 is about 33623.7331508564. The cubic root of 1130555431 is about 1041.7510660091.

The spelling of 1130555431 in words is "one billion, one hundred thirty million, five hundred fifty-five thousand, four hundred thirty-one".