1351923 has 4 divisors (see below), whose sum is σ = 1802568. Its totient is φ = 901280.

The previous prime is 1351921. The next prime is 1351949. The reversal of 1351923 is 3291531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1351923 - 2¹ = 1351921 is a prime.

It is a D-number.

1351923 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1351893 and 1351902.

It is not an unprimeable number, because it can be changed into a prime (1351921) 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, 225318 + ... + 225323.

It is an arithmetic number, because the mean of its divisors is an integer number (450642).

2^1351923 is an apocalyptic number.

1351923 is a deficient number, since it is larger than the sum of its proper divisors (450645).

1351923 is an equidigital number, since it uses as much as digits as its factorization.

1351923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450644.

The product of its digits is 810, while the sum is 24.

The square root of 1351923 is about 1162.7222368218. The cubic root of 1351923 is about 110.5733970441.

The spelling of 1351923 in words is "one million, three hundred fifty-one thousand, nine hundred twenty-three".