20423134441 has 8 divisors (see below), whose sum is σ = 21318522624. Its totient is φ = 19528365120.

The previous prime is 20423134429. The next prime is 20423134453. The reversal of 20423134441 is 14443132402.

It is an interprime number because it is at equal distance from previous prime (20423134429) and next prime (20423134453).

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

It is a cyclic number.

It is not a de Polignac number, because 20423134441 - 2¹⁷ = 20423003369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20423134411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86625 + ... + 219886.

It is an arithmetic number, because the mean of its divisors is an integer number (2664815328).

Almost surely, 2^20423134441 is an apocalyptic number.

It is an amenable number.

20423134441 is a deficient number, since it is larger than the sum of its proper divisors (895388183).

20423134441 is a wasteful number, since it uses less digits than its factorization.

20423134441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309431.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20423134441 its reverse (14443132402), we get a palindrome (34866266843).

The spelling of 20423134441 in words is "twenty billion, four hundred twenty-three million, one hundred thirty-four thousand, four hundred forty-one".