23140434451 has 4 divisors (see below), whose sum is σ = 23141327112. Its totient is φ = 23139541792.

The previous prime is 23140434431. The next prime is 23140434461. The reversal of 23140434451 is 15443404132.

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 23140434451 - 2¹³ = 23140426259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23140434431) 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, 406246 + ... + 459691.

It is an arithmetic number, because the mean of its divisors is an integer number (5785331778).

Almost surely, 2^23140434451 is an apocalyptic number.

23140434451 is a deficient number, since it is larger than the sum of its proper divisors (892661).

23140434451 is an equidigital number, since it uses as much as digits as its factorization.

23140434451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892660.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 23140434451 its reverse (15443404132), we get a palindrome (38583838583).

The spelling of 23140434451 in words is "twenty-three billion, one hundred forty million, four hundred thirty-four thousand, four hundred fifty-one".