20231144451 has 18 divisors (see below), whose sum is σ = 33993828492. Its totient is φ = 11560653720.

The previous prime is 20231144449. The next prime is 20231144473. The reversal of 20231144451 is 15444113202.

20231144451 is a `hidden beast` number, since 202 + 3 + 1 + 1 + 4 + 4 + 451 = 666.

It is not a de Polignac number, because 20231144451 - 2¹ = 20231144449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20231144051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22937365 + ... + 22938246.

Almost surely, 2^20231144451 is an apocalyptic number.

20231144451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20231144451 is a deficient number, since it is larger than the sum of its proper divisors (13762684041).

20231144451 is a wasteful number, since it uses less digits than its factorization.

20231144451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45875631 (or 45875621 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 20231144451 its reverse (15444113202), we get a palindrome (35675257653).

The spelling of 20231144451 in words is "twenty billion, two hundred thirty-one million, one hundred forty-four thousand, four hundred fifty-one".