23243431515 has 8 divisors (see below), whose sum is σ = 37189490448. Its totient is φ = 12396496800.

The previous prime is 23243431513. The next prime is 23243431537. The reversal of 23243431515 is 51513434232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23243431515 - 2¹ = 23243431513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23243431513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774781036 + ... + 774781065.

It is an arithmetic number, because the mean of its divisors is an integer number (4648686306).

Almost surely, 2^23243431515 is an apocalyptic number.

23243431515 is a deficient number, since it is larger than the sum of its proper divisors (13946058933).

23243431515 is a wasteful number, since it uses less digits than its factorization.

23243431515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549562109.

The product of its digits is 43200, while the sum is 33.

Adding to 23243431515 its reverse (51513434232), we get a palindrome (74756865747).

The spelling of 23243431515 in words is "twenty-three billion, two hundred forty-three million, four hundred thirty-one thousand, five hundred fifteen".