23093528947 has 4 divisors (see below), whose sum is σ = 23717678416. Its totient is φ = 22469379480.

The previous prime is 23093528897. The next prime is 23093528989. The reversal of 23093528947 is 74982539032.

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 23093528947 - 2³¹ = 20946045299 is a prime.

It is a super-2 number, since 2×23093528947² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23093528894 and 23093528903.

It is not an unprimeable number, because it can be changed into a prime (23093528147) 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, 312074679 + ... + 312074752.

It is an arithmetic number, because the mean of its divisors is an integer number (5929419604).

Almost surely, 2^23093528947 is an apocalyptic number.

23093528947 is a deficient number, since it is larger than the sum of its proper divisors (624149469).

23093528947 is an equidigital number, since it uses as much as digits as its factorization.

23093528947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624149468.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 23093528947 in words is "twenty-three billion, ninety-three million, five hundred twenty-eight thousand, nine hundred forty-seven".