20423131401 has 4 divisors (see below), whose sum is σ = 27230841872. Its totient is φ = 13615420932.

The previous prime is 20423131367. The next prime is 20423131403. The reversal of 20423131401 is 10413132402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20423131401 - 2¹⁴ = 20423115017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20423131403) 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, 3403855231 + ... + 3403855236.

It is an arithmetic number, because the mean of its divisors is an integer number (6807710468).

Almost surely, 2^20423131401 is an apocalyptic number.

It is an amenable number.

20423131401 is a deficient number, since it is larger than the sum of its proper divisors (6807710471).

20423131401 is an equidigital number, since it uses as much as digits as its factorization.

20423131401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6807710470.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20423131401 its reverse (10413132402), we get a palindrome (30836263803).

The spelling of 20423131401 in words is "twenty billion, four hundred twenty-three million, one hundred thirty-one thousand, four hundred one".