1381332923 has 4 divisors (see below), whose sum is σ = 1381557240. Its totient is φ = 1381108608.

The previous prime is 1381332913. The next prime is 1381332929. The reversal of 1381332923 is 3292331831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3292331831 = 971 ⋅3390661.

It is a cyclic number.

It is not a de Polignac number, because 1381332923 - 2⁴ = 1381332907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381332929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102653 + ... + 115326.

It is an arithmetic number, because the mean of its divisors is an integer number (345389310).

Almost surely, 2^1381332923 is an apocalyptic number.

1381332923 is a deficient number, since it is larger than the sum of its proper divisors (224317).

1381332923 is an equidigital number, since it uses as much as digits as its factorization.

1381332923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224316.

The product of its digits is 23328, while the sum is 35.

The square root of 1381332923 is about 37166.2874524750. The cubic root of 1381332923 is about 1113.6946182368.

The spelling of 1381332923 in words is "one billion, three hundred eighty-one million, three hundred thirty-two thousand, nine hundred twenty-three".