20131120322 has 4 divisors (see below), whose sum is σ = 30196680486. Its totient is φ = 10065560160.

The previous prime is 20131120297. The next prime is 20131120337. The reversal of 20131120322 is 22302113102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14879364361 + 5251755961 = 121981^2 + 72469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20131120322.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5032780079 + ... + 5032780082.

Almost surely, 2^20131120322 is an apocalyptic number.

20131120322 is a deficient number, since it is larger than the sum of its proper divisors (10065560164).

20131120322 is a wasteful number, since it uses less digits than its factorization.

20131120322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065560163.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20131120322 its reverse (22302113102), we get a palindrome (42433233424).

The spelling of 20131120322 in words is "twenty billion, one hundred thirty-one million, one hundred twenty thousand, three hundred twenty-two".