105420435431 has 4 divisors (see below), whose sum is σ = 105427980000. Its totient is φ = 105412890864.

The previous prime is 105420435427. The next prime is 105420435443. The reversal of 105420435431 is 134534024501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105420435431 - 2² = 105420435427 is a prime.

It is a super-2 number, since 2×105420435431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105420435451) 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, 3751286 + ... + 3779283.

It is an arithmetic number, because the mean of its divisors is an integer number (26356995000).

Almost surely, 2^105420435431 is an apocalyptic number.

105420435431 is a deficient number, since it is larger than the sum of its proper divisors (7544569).

105420435431 is an equidigital number, since it uses as much as digits as its factorization.

105420435431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7544568.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 105420435431 its reverse (134534024501), we get a palindrome (239954459932).

The spelling of 105420435431 in words is "one hundred five billion, four hundred twenty million, four hundred thirty-five thousand, four hundred thirty-one".