1131679 has 4 divisors (see below), whose sum is σ = 1150920. Its totient is φ = 1112440.

The previous prime is 1131677. The next prime is 1131701. The reversal of 1131679 is 9761311.

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 1131679 - 2¹ = 1131677 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131671) 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, 9532 + ... + 9649.

It is an arithmetic number, because the mean of its divisors is an integer number (287730).

2^1131679 is an apocalyptic number.

1131679 is a deficient number, since it is larger than the sum of its proper divisors (19241).

1131679 is an equidigital number, since it uses as much as digits as its factorization.

1131679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19240.

The product of its digits is 1134, while the sum is 28.

The square root of 1131679 is about 1063.8040233050. The cubic root of 1131679 is about 104.2096056220.

The spelling of 1131679 in words is "one million, one hundred thirty-one thousand, six hundred seventy-nine".