1381123 has 4 divisors (see below), whose sum is σ = 1383480. Its totient is φ = 1378768.

The previous prime is 1381111. The next prime is 1381141. The reversal of 1381123 is 3211831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1381123 - 2⁹ = 1380611 is a prime.

It is a super-2 number, since 2×1381123² = 3815001482258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1381123.

It is not an unprimeable number, because it can be changed into a prime (1381103) 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, 468 + ... + 1726.

It is an arithmetic number, because the mean of its divisors is an integer number (345870).

2^1381123 is an apocalyptic number.

1381123 is a deficient number, since it is larger than the sum of its proper divisors (2357).

1381123 is a wasteful number, since it uses less digits than its factorization.

1381123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356.

The product of its digits is 144, while the sum is 19.

The square root of 1381123 is about 1175.2118957873. The cubic root of 1381123 is about 111.3638198828.

Adding to 1381123 its reverse (3211831), we get a palindrome (4592954).

The spelling of 1381123 in words is "one million, three hundred eighty-one thousand, one hundred twenty-three".