20075431305 has 16 divisors (see below), whose sum is σ = 32122555200. Its totient is φ = 10706275008.

The previous prime is 20075431303. The next prime is 20075431307. The reversal of 20075431305 is 50313457002.

It is an interprime number because it is at equal distance from previous prime (20075431303) and next prime (20075431307).

It is not a de Polignac number, because 20075431305 - 2¹ = 20075431303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20075431303) 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, 360471 + ... + 412419.

It is an arithmetic number, because the mean of its divisors is an integer number (2007659700).

Almost surely, 2^20075431305 is an apocalyptic number.

It is an amenable number.

20075431305 is a deficient number, since it is larger than the sum of its proper divisors (12047123895).

20075431305 is a wasteful number, since it uses less digits than its factorization.

20075431305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77720.

The product of its (nonzero) digits is 12600, while the sum is 30.

Adding to 20075431305 its reverse (50313457002), we get a palindrome (70388888307).

The spelling of 20075431305 in words is "twenty billion, seventy-five million, four hundred thirty-one thousand, three hundred five".