1131253018 has 16 divisors (see below), whose sum is σ = 1939835520. Its totient is φ = 484686576.

The previous prime is 1131253007. The next prime is 1131253037. The reversal of 1131253018 is 8103521311.

It is a junction number, because it is equal to n+sod(n) for n = 1131252983 and 1131253001.

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, 52788 + ... + 71056.

It is an arithmetic number, because the mean of its divisors is an integer number (121239720).

Almost surely, 2^1131253018 is an apocalyptic number.

1131253018 is a deficient number, since it is larger than the sum of its proper divisors (808582502).

1131253018 is a wasteful number, since it uses less digits than its factorization.

1131253018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22701.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1131253018 is about 33634.1049828890. The cubic root of 1131253018 is about 1041.9652859593.

Adding to 1131253018 its reverse (8103521311), we get a palindrome (9234774329).

The spelling of 1131253018 in words is "one billion, one hundred thirty-one million, two hundred fifty-three thousand, eighteen".