1156323 has 32 divisors (see below), whose sum is σ = 1935360. Its totient is φ = 599040.

The previous prime is 1156307. The next prime is 1156327. The reversal of 1156323 is 3236511.

It is not a de Polignac number, because 1156323 - 2⁴ = 1156307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1156323.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14598 + ... + 14676.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2^1156323 is an apocalyptic number.

1156323 is a deficient number, since it is larger than the sum of its proper divisors (779037).

1156323 is a wasteful number, since it uses less digits than its factorization.

1156323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147.

The product of its digits is 540, while the sum is 21.

The square root of 1156323 is about 1075.3246021551. The cubic root of 1156323 is about 104.9606201532.

The spelling of 1156323 in words is "one million, one hundred fifty-six thousand, three hundred twenty-three".