1131473259 has 48 divisors (see below), whose sum is σ = 1954160640. Its totient is φ = 645155280.

The previous prime is 1131473249. The next prime is 1131473261. The reversal of 1131473259 is 9523741311.

1131473259 is a `hidden beast` number, since 1 + 131 + 473 + 2 + 59 = 666.

1131473259 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1131473259 - 2⁵ = 1131473227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131473219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1141254 + ... + 1142244.

It is an arithmetic number, because the mean of its divisors is an integer number (40711680).

Almost surely, 2^1131473259 is an apocalyptic number.

1131473259 is a deficient number, since it is larger than the sum of its proper divisors (822687381).

1131473259 is an equidigital number, since it uses as much as digits as its factorization.

1131473259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877 (or 1864 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 1131473259 is about 33637.3788961031. The cubic root of 1131473259 is about 1042.0329008318.

The spelling of 1131473259 in words is "one billion, one hundred thirty-one million, four hundred seventy-three thousand, two hundred fifty-nine".