23731047 has 12 divisors (see below), whose sum is σ = 34713120. Its totient is φ = 15619968.

The previous prime is 23730989. The next prime is 23731051. The reversal of 23731047 is 74013732.

It is not a de Polignac number, because 23731047 - 2⁷ = 23730919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23731047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23736047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15978 + ... + 17399.

It is an arithmetic number, because the mean of its divisors is an integer number (2892760).

Almost surely, 2^23731047 is an apocalyptic number.

23731047 is a deficient number, since it is larger than the sum of its proper divisors (10982073).

23731047 is a wasteful number, since it uses less digits than its factorization.

23731047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33462 (or 33459 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 23731047 is about 4871.4522475336. The cubic root of 23731047 is about 287.3683712504.

Adding to 23731047 its reverse (74013732), we get a palindrome (97744779).

The spelling of 23731047 in words is "twenty-three million, seven hundred thirty-one thousand, forty-seven".