20403123302 has 4 divisors (see below), whose sum is σ = 30604684956. Its totient is φ = 10201561650.

The previous prime is 20403123289. The next prime is 20403123397. The reversal of 20403123302 is 20332130402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20332130402 = 2 ⋅10166065201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100780824 + ... + 5100780827.

It is an arithmetic number, because the mean of its divisors is an integer number (7651171239).

Almost surely, 2^20403123302 is an apocalyptic number.

20403123302 is a deficient number, since it is larger than the sum of its proper divisors (10201561654).

20403123302 is a wasteful number, since it uses less digits than its factorization.

20403123302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201561653.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20403123302 its reverse (20332130402), we get a palindrome (40735253704).

The spelling of 20403123302 in words is "twenty billion, four hundred three million, one hundred twenty-three thousand, three hundred two".