20310403145 has 16 divisors (see below), whose sum is σ = 25174087680. Its totient is φ = 15714561600.

The previous prime is 20310403129. The next prime is 20310403177. The reversal of 20310403145 is 54130401302.

It is not a de Polignac number, because 20310403145 - 2⁴ = 20310403129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20310403145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219440 + ... + 297950.

It is an arithmetic number, because the mean of its divisors is an integer number (1573380480).

Almost surely, 2^20310403145 is an apocalyptic number.

It is an amenable number.

20310403145 is a deficient number, since it is larger than the sum of its proper divisors (4863684535).

20310403145 is a wasteful number, since it uses less digits than its factorization.

20310403145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80216.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20310403145 its reverse (54130401302), we get a palindrome (74440804447).

The spelling of 20310403145 in words is "twenty billion, three hundred ten million, four hundred three thousand, one hundred forty-five".