1131723 has 12 divisors (see below), whose sum is σ = 1675128. Its totient is φ = 735840.

The previous prime is 1131721. The next prime is 1131727. The reversal of 1131723 is 3271311.

It is not a de Polignac number, because 1131723 - 2¹ = 1131721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131696 and 1131705.

It is not an unprimeable number, because it can be changed into a prime (1131721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1165 + ... + 1902.

It is an arithmetic number, because the mean of its divisors is an integer number (139594).

2^1131723 is an apocalyptic number.

1131723 is a deficient number, since it is larger than the sum of its proper divisors (543405).

1131723 is a wasteful number, since it uses less digits than its factorization.

1131723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114 (or 3111 counting only the distinct ones).

The product of its digits is 126, while the sum is 18.

The square root of 1131723 is about 1063.8247036049. The cubic root of 1131723 is about 104.2109561708.

The spelling of 1131723 in words is "one million, one hundred thirty-one thousand, seven hundred twenty-three".