1405243323 has 20 divisors (see below), whose sum is σ = 2290027608. Its totient is φ = 851662080.

The previous prime is 1405243319. The next prime is 1405243337. The reversal of 1405243323 is 3233425041.

It is not a de Polignac number, because 1405243323 - 2² = 1405243319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1405243303) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 787686 + ... + 789467.

Almost surely, 2^1405243323 is an apocalyptic number.

1405243323 is a deficient number, since it is larger than the sum of its proper divisors (884784285).

1405243323 is a wasteful number, since it uses less digits than its factorization.

1405243323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577176 (or 1577167 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 1405243323 is about 37486.5752370098. The cubic root of 1405243323 is about 1120.0837849204.

Adding to 1405243323 its reverse (3233425041), we get a palindrome (4638668364).

It can be divided in two parts, 14052 and 43323, that added together give a palindrome (57375).

The spelling of 1405243323 in words is "one billion, four hundred five million, two hundred forty-three thousand, three hundred twenty-three".