1173381 has 24 divisors (see below), whose sum is σ = 1811232. Its totient is φ = 669600.

The previous prime is 1173373. The next prime is 1173397. The reversal of 1173381 is 1833711.

It is not a de Polignac number, because 1173381 - 2³ = 1173373 is a prime.

It is a super-2 number, since 2×1173381² = 2753645942322, which contains 22 as substring.

1173381 is a lucky number.

It is a plaindrome in base 14.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31695 + ... + 31731.

It is an arithmetic number, because the mean of its divisors is an integer number (75468).

2^1173381 is an apocalyptic number.

1173381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1173381 is a deficient number, since it is larger than the sum of its proper divisors (637851).

1173381 is a wasteful number, since it uses less digits than its factorization.

1173381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 82 counting only the distinct ones).

The product of its digits is 504, while the sum is 24.

The square root of 1173381 is about 1083.2271229987. The cubic root of 1173381 is about 105.4742268377.

The spelling of 1173381 in words is "one million, one hundred seventy-three thousand, three hundred eighty-one".