20361423 has 4 divisors (see below), whose sum is σ = 27148568. Its totient is φ = 13574280.

The previous prime is 20361421. The next prime is 20361437. The reversal of 20361423 is 32416302.

It is a happy number.

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

It is not a de Polignac number, because 20361423 - 2¹ = 20361421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20361423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361421) 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, 3393568 + ... + 3393573.

It is an arithmetic number, because the mean of its divisors is an integer number (6787142).

Almost surely, 2^20361423 is an apocalyptic number.

20361423 is a deficient number, since it is larger than the sum of its proper divisors (6787145).

20361423 is an equidigital number, since it uses as much as digits as its factorization.

20361423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787144.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20361423 is about 4512.3633497315. The cubic root of 20361423 is about 273.0670983215.

Adding to 20361423 its reverse (32416302), we get a palindrome (52777725).

The spelling of 20361423 in words is "twenty million, three hundred sixty-one thousand, four hundred twenty-three".