1512203423 has 4 divisors (see below), whose sum is σ = 1518478368. Its totient is φ = 1505928480.

The previous prime is 1512203401. The next prime is 1512203437. The reversal of 1512203423 is 3243022151.

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 1512203423 - 2¹⁸ = 1511941279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1512203723) 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, 3137111 + ... + 3137592.

It is an arithmetic number, because the mean of its divisors is an integer number (379619592).

Almost surely, 2^1512203423 is an apocalyptic number.

1512203423 is a deficient number, since it is larger than the sum of its proper divisors (6274945).

1512203423 is an equidigital number, since it uses as much as digits as its factorization.

1512203423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6274944.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1512203423 is about 38887.0598400033. The cubic root of 1512203423 is about 1147.8101801330.

Adding to 1512203423 its reverse (3243022151), we get a palindrome (4755225574).

The spelling of 1512203423 in words is "one billion, five hundred twelve million, two hundred three thousand, four hundred twenty-three".