20401323319 has 16 divisors (see below), whose sum is σ = 22352077440. Its totient is φ = 18505317600.

The previous prime is 20401323281. The next prime is 20401323343. The reversal of 20401323319 is 91332310402.

It is a cyclic number.

It is not a de Polignac number, because 20401323319 - 2¹⁹ = 20400799031 is a prime.

It is a super-2 number, since 2×20401323319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401323389) 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, 2950264 + ... + 2957170.

It is an arithmetic number, because the mean of its divisors is an integer number (1397004840).

Almost surely, 2^20401323319 is an apocalyptic number.

20401323319 is a deficient number, since it is larger than the sum of its proper divisors (1950754121).

20401323319 is a wasteful number, since it uses less digits than its factorization.

20401323319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10830.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 20401323319 in words is "twenty billion, four hundred one million, three hundred twenty-three thousand, three hundred nineteen".