1130021023 has 4 divisors (see below), whose sum is σ = 1130723208. Its totient is φ = 1129318840.

The previous prime is 1130021017. The next prime is 1130021051. The reversal of 1130021023 is 3201200311.

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-1130021023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1130020994 and 1130021012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130021723) 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, 348673 + ... + 351898.

It is an arithmetic number, because the mean of its divisors is an integer number (282680802).

Almost surely, 2^1130021023 is an apocalyptic number.

1130021023 is a deficient number, since it is larger than the sum of its proper divisors (702185).

1130021023 is an equidigital number, since it uses as much as digits as its factorization.

1130021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702184.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1130021023 is about 33615.7853247548. The cubic root of 1130021023 is about 1041.5868966015.

Adding to 1130021023 its reverse (3201200311), we get a palindrome (4331221334).

It can be divided in two parts, 11300 and 21023, that added together give a palindrome (32323).

The spelling of 1130021023 in words is "one billion, one hundred thirty million, twenty-one thousand, twenty-three".