23231001547 has 4 divisors (see below), whose sum is σ = 25018001680. Its totient is φ = 21444001416.

The previous prime is 23231001539. The next prime is 23231001553. The reversal of 23231001547 is 74510013232.

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 23231001547 - 2³ = 23231001539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23231001847) 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, 893500047 + ... + 893500072.

It is an arithmetic number, because the mean of its divisors is an integer number (6254500420).

Almost surely, 2^23231001547 is an apocalyptic number.

23231001547 is a deficient number, since it is larger than the sum of its proper divisors (1787000133).

23231001547 is a wasteful number, since it uses less digits than its factorization.

23231001547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787000132.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 23231001547 its reverse (74510013232), we get a palindrome (97741014779).

The spelling of 23231001547 in words is "twenty-three billion, two hundred thirty-one million, one thousand, five hundred forty-seven".