1130023231 has 4 divisors (see below), whose sum is σ = 1148548264. Its totient is φ = 1111498200.

The previous prime is 1130023211. The next prime is 1130023259. The reversal of 1130023231 is 1323200311.

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-1130023231 is a prime.

It is a super-2 number, since 2×1130023231² = 2553905005199358722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130023211) 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, 9262425 + ... + 9262546.

It is an arithmetic number, because the mean of its divisors is an integer number (287137066).

Almost surely, 2^1130023231 is an apocalyptic number.

1130023231 is a deficient number, since it is larger than the sum of its proper divisors (18525033).

1130023231 is an equidigital number, since it uses as much as digits as its factorization.

1130023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18525032.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1130023231 is about 33615.8181664525. The cubic root of 1130023231 is about 1041.5875750025.

Adding to 1130023231 its reverse (1323200311), we get a palindrome (2453223542).

The spelling of 1130023231 in words is "one billion, one hundred thirty million, twenty-three thousand, two hundred thirty-one".