1131523012 has 6 divisors (see below), whose sum is σ = 1980165278. Its totient is φ = 565761504.

The previous prime is 1131523007. The next prime is 1131523031. The reversal of 1131523012 is 2103251311.

It can be written as a sum of positive squares in only one way, i.e., 1099983556 + 31539456 = 33166^2 + 5616^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141440373 + ... + 141440380.

Almost surely, 2^1131523012 is an apocalyptic number.

It is an amenable number.

1131523012 is a deficient number, since it is larger than the sum of its proper divisors (848642266).

1131523012 is a wasteful number, since it uses less digits than its factorization.

1131523012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282880757 (or 282880755 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1131523012 is about 33638.1184372729. The cubic root of 1131523012 is about 1042.0481739879.

Adding to 1131523012 its reverse (2103251311), we get a palindrome (3234774323).

The spelling of 1131523012 in words is "one billion, one hundred thirty-one million, five hundred twenty-three thousand, twelve".