1423303623 has 32 divisors (see below), whose sum is σ = 2536665600. Its totient is φ = 770508288.

The previous prime is 1423303619. The next prime is 1423303723. The reversal of 1423303623 is 3263033241.

It is a happy number.

1423303623 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 30 + 3 + 623 = 666.

It is not a de Polignac number, because 1423303623 - 2² = 1423303619 is a prime.

It is a super-2 number, since 2×1423303623² = 4051586406489852258, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423303523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194586 + ... + 201767.

It is an arithmetic number, because the mean of its divisors is an integer number (79270800).

Almost surely, 2^1423303623 is an apocalyptic number.

1423303623 is a deficient number, since it is larger than the sum of its proper divisors (1113361977).

1423303623 is a wasteful number, since it uses less digits than its factorization.

1423303623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396388 (or 396382 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 1423303623 is about 37726.6964230901. The cubic root of 1423303623 is about 1124.8618425896.

Adding to 1423303623 its reverse (3263033241), we get a palindrome (4686336864).

The spelling of 1423303623 in words is "one billion, four hundred twenty-three million, three hundred three thousand, six hundred twenty-three".