20310071730 has 32 divisors (see below), whose sum is σ = 52493724864. Its totient is φ = 4999402176.

The previous prime is 20310071713. The next prime is 20310071791. The reversal of 20310071730 is 3717001302.

It is a self number, because there is not a number n which added to its sum of digits gives 20310071730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26038164 + ... + 26038943.

It is an arithmetic number, because the mean of its divisors is an integer number (1640428902).

Almost surely, 2^20310071730 is an apocalyptic number.

20310071730 is an abundant number, since it is smaller than the sum of its proper divisors (32183653134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310071730 is a wasteful number, since it uses less digits than its factorization.

20310071730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52077130.

The product of its (nonzero) digits is 882, while the sum is 24.

The spelling of 20310071730 in words is "twenty billion, three hundred ten million, seventy-one thousand, seven hundred thirty".