20401423323 has 16 divisors (see below), whose sum is σ = 27537584256. Its totient is φ = 13433200640.

The previous prime is 20401423309. The next prime is 20401423349. The reversal of 20401423323 is 32332410402.

It is a cyclic number.

It is not a de Polignac number, because 20401423323 - 2⁴ = 20401423307 is a prime.

It is a super-3 number, since 3×20401423323³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20401423293 and 20401423302.

It is not an unprimeable number, because it can be changed into a prime (20401423373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1038811 + ... + 1058267.

It is an arithmetic number, because the mean of its divisors is an integer number (1721099016).

Almost surely, 2^20401423323 is an apocalyptic number.

20401423323 is a deficient number, since it is larger than the sum of its proper divisors (7136160933).

20401423323 is a wasteful number, since it uses less digits than its factorization.

20401423323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23754.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20401423323 its reverse (32332410402), we get a palindrome (52733833725).

The spelling of 20401423323 in words is "twenty billion, four hundred one million, four hundred twenty-three thousand, three hundred twenty-three".