20231013442 has 4 divisors (see below), whose sum is σ = 30346520166. Its totient is φ = 10115506720.

The previous prime is 20231013419. The next prime is 20231013443. The reversal of 20231013442 is 24431013202.

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., 19846892641 + 384120801 = 140879^2 + 19599^2 .

It is not an unprimeable number, because it can be changed into a prime (20231013443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5057753359 + ... + 5057753362.

Almost surely, 2^20231013442 is an apocalyptic number.

20231013442 is a deficient number, since it is larger than the sum of its proper divisors (10115506724).

20231013442 is a wasteful number, since it uses less digits than its factorization.

20231013442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10115506723.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20231013442 its reverse (24431013202), we get a palindrome (44662026644).

The spelling of 20231013442 in words is "twenty billion, two hundred thirty-one million, thirteen thousand, four hundred forty-two".