1131002879 has 4 divisors (see below), whose sum is σ = 1132293384. Its totient is φ = 1129712376.

The previous prime is 1131002863. The next prime is 1131002927. The reversal of 1131002879 is 9782001311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131002879 - 2⁴ = 1131002863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131002839) 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, 643937 + ... + 645690.

It is an arithmetic number, because the mean of its divisors is an integer number (283073346).

Almost surely, 2^1131002879 is an apocalyptic number.

1131002879 is a deficient number, since it is larger than the sum of its proper divisors (1290505).

1131002879 is an equidigital number, since it uses as much as digits as its factorization.

1131002879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290504.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1131002879 is about 33630.3862451801. The cubic root of 1131002879 is about 1041.8884816361. Note that the first 3 decimals are identical.

The spelling of 1131002879 in words is "one billion, one hundred thirty-one million, two thousand, eight hundred seventy-nine".