23144253947 has 4 divisors (see below), whose sum is σ = 23890842816. Its totient is φ = 22397665080.

The previous prime is 23144253943. The next prime is 23144253971. The reversal of 23144253947 is 74935244132.

It is a happy number.

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 23144253947 - 2² = 23144253943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23144253898 and 23144253907.

It is not an unprimeable number, because it can be changed into a prime (23144253941) 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, 373294388 + ... + 373294449.

It is an arithmetic number, because the mean of its divisors is an integer number (5972710704).

Almost surely, 2^23144253947 is an apocalyptic number.

23144253947 is a deficient number, since it is larger than the sum of its proper divisors (746588869).

23144253947 is an equidigital number, since it uses as much as digits as its factorization.

23144253947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746588868.

The product of its digits is 725760, while the sum is 44.

The spelling of 23144253947 in words is "twenty-three billion, one hundred forty-four million, two hundred fifty-three thousand, nine hundred forty-seven".