1131320139 has 8 divisors (see below), whose sum is σ = 1536887952. Its totient is φ = 739982880.

The previous prime is 1131320111. The next prime is 1131320143. The reversal of 1131320139 is 9310231311.

1131320139 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131320139 - 2¹³ = 1131311947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131320149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3557452 + ... + 3557769.

It is an arithmetic number, because the mean of its divisors is an integer number (192110994).

Almost surely, 2^1131320139 is an apocalyptic number.

1131320139 is a deficient number, since it is larger than the sum of its proper divisors (405567813).

1131320139 is an equidigital number, since it uses as much as digits as its factorization.

1131320139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7115277.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 1131320139 is about 33635.1027796854. The cubic root of 1131320139 is about 1041.9858933058.

The spelling of 1131320139 in words is "one billion, one hundred thirty-one million, three hundred twenty thousand, one hundred thirty-nine".