23431081444 has 6 divisors (see below), whose sum is σ = 41004392534. Its totient is φ = 11715540720.

The previous prime is 23431081423. The next prime is 23431081451. The reversal of 23431081444 is 44418013432.

It can be written as a sum of positive squares in only one way, i.e., 16144751844 + 7286329600 = 127062^2 + 85360^2 .

It is a super-2 number, since 2×23431081444² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2928885177 + ... + 2928885184.

Almost surely, 2^23431081444 is an apocalyptic number.

It is an amenable number.

23431081444 is a deficient number, since it is larger than the sum of its proper divisors (17573311090).

23431081444 is a wasteful number, since it uses less digits than its factorization.

23431081444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857770365 (or 5857770363 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

Adding to 23431081444 its reverse (44418013432), we get a palindrome (67849094876).

The spelling of 23431081444 in words is "twenty-three billion, four hundred thirty-one million, eighty-one thousand, four hundred forty-four".