105444431 has 4 divisors (see below), whose sum is σ = 105546000. Its totient is φ = 105342864.

The previous prime is 105444373. The next prime is 105444461. The reversal of 105444431 is 134444501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134444501 = 241 ⋅557861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105444431 is a prime.

It is a super-2 number, since 2×105444431² = 22237056057827522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105444431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105444461) 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, 49211 + ... + 51308.

It is an arithmetic number, because the mean of its divisors is an integer number (26386500).

Almost surely, 2^105444431 is an apocalyptic number.

105444431 is a deficient number, since it is larger than the sum of its proper divisors (101569).

105444431 is a wasteful number, since it uses less digits than its factorization.

105444431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101568.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 105444431 is about 10268.6138791952. The cubic root of 105444431 is about 472.4340768213.

Adding to 105444431 its reverse (134444501), we get a palindrome (239888932).

The spelling of 105444431 in words is "one hundred five million, four hundred forty-four thousand, four hundred thirty-one".