20321233442 has 8 divisors (see below), whose sum is σ = 30558631836. Its totient is φ = 10135022832.

The previous prime is 20321233403. The next prime is 20321233463. The reversal of 20321233442 is 24433212302.

It can be written as a sum of positive squares in 2 ways, for example, as 20288868721 + 32364721 = 142439^2 + 5689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12795953 + ... + 12797540.

Almost surely, 2^20321233442 is an apocalyptic number.

20321233442 is a deficient number, since it is larger than the sum of its proper divisors (10237398394).

20321233442 is a wasteful number, since it uses less digits than its factorization.

20321233442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25593892.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20321233442 its reverse (24433212302), we get a palindrome (44754445744).

The spelling of 20321233442 in words is "twenty billion, three hundred twenty-one million, two hundred thirty-three thousand, four hundred forty-two".