1131379 has 2 divisors, whose sum is σ = 1131380. Its totient is φ = 1131378.

The previous prime is 1131353. The next prime is 1131397. The reversal of 1131379 is 9731311.

Together with next prime (1131397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131379 - 2¹⁹ = 607091 is a prime.

1131379 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1131329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565689 + 565690.

It is an arithmetic number, because the mean of its divisors is an integer number (565690).

2^1131379 is an apocalyptic number.

1131379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131379 is an equidigital number, since it uses as much as digits as its factorization.

1131379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567, while the sum is 25.

The square root of 1131379 is about 1063.6630105442. The cubic root of 1131379 is about 104.2003964014.

The spelling of 1131379 in words is "one million, one hundred thirty-one thousand, three hundred seventy-nine".