243023250451 has 4 divisors (see below), whose sum is σ = 243096475600. Its totient is φ = 242950025304.

The previous prime is 243023250439. The next prime is 243023250487. The reversal of 243023250451 is 154052320342.

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

It is a cyclic number.

It is not a de Polignac number, because 243023250451 - 2⁵ = 243023250419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243023250851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36607596 + ... + 36614233.

It is an arithmetic number, because the mean of its divisors is an integer number (60774118900).

Almost surely, 2^243023250451 is an apocalyptic number.

243023250451 is a deficient number, since it is larger than the sum of its proper divisors (73225149).

243023250451 is an equidigital number, since it uses as much as digits as its factorization.

243023250451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73225148.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 243023250451 its reverse (154052320342), we get a palindrome (397075570793).

The spelling of 243023250451 in words is "two hundred forty-three billion, twenty-three million, two hundred fifty thousand, four hundred fifty-one".