20223131905 has 8 divisors (see below), whose sum is σ = 24269899752. Its totient is φ = 16177077888.

The previous prime is 20223131867. The next prime is 20223131947. The reversal of 20223131905 is 50913132202.

It can be written as a sum of positive squares in 4 ways, for example, as 83832336 + 20139299569 = 9156^2 + 141913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20223131905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114012 + ... + 231181.

It is an arithmetic number, because the mean of its divisors is an integer number (3033737469).

Almost surely, 2^20223131905 is an apocalyptic number.

It is an amenable number.

20223131905 is a deficient number, since it is larger than the sum of its proper divisors (4046767847).

20223131905 is a wasteful number, since it uses less digits than its factorization.

20223131905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356915.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 20223131905 in words is "twenty billion, two hundred twenty-three million, one hundred thirty-one thousand, nine hundred five".