20463123 has 16 divisors (see below), whose sum is σ = 28878336. Its totient is φ = 12862080.

The previous prime is 20463119. The next prime is 20463137. The reversal of 20463123 is 32136402.

It is a happy number.

It is not a de Polignac number, because 20463123 - 2² = 20463119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20463123.

It is not an unprimeable number, because it can be changed into a prime (20463103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2811 + ... + 6987.

It is an arithmetic number, because the mean of its divisors is an integer number (1804896).

Almost surely, 2^20463123 is an apocalyptic number.

20463123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20463123 is a deficient number, since it is larger than the sum of its proper divisors (8415213).

20463123 is a wasteful number, since it uses less digits than its factorization.

20463123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274.

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

The square root of 20463123 is about 4523.6183526023. The cubic root of 20463123 is about 273.5209764811.

Adding to 20463123 its reverse (32136402), we get a palindrome (52599525).

The spelling of 20463123 in words is "twenty million, four hundred sixty-three thousand, one hundred twenty-three".