23431081443 has 32 divisors (see below), whose sum is σ = 38977843200. Its totient is φ = 12163404960.

The previous prime is 23431081423. The next prime is 23431081451. The reversal of 23431081443 is 34418013432.

It is not a de Polignac number, because 23431081443 - 2⁶ = 23431081379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (23431081403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299208 + ... + 369306.

It is an arithmetic number, because the mean of its divisors is an integer number (1218057600).

Almost surely, 2^23431081443 is an apocalyptic number.

23431081443 is a deficient number, since it is larger than the sum of its proper divisors (15546761757).

23431081443 is a wasteful number, since it uses less digits than its factorization.

23431081443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71567.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 23431081443 its reverse (34418013432), we get a palindrome (57849094875).

The spelling of 23431081443 in words is "twenty-three billion, four hundred thirty-one million, eighty-one thousand, four hundred forty-three".