105261431 has 4 divisors (see below), whose sum is σ = 114830664. Its totient is φ = 95692200.

The previous prime is 105261419. The next prime is 105261451. The reversal of 105261431 is 134162501.

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 105261431 - 2¹⁸ = 104999287 is a prime.

It is a super-2 number, since 2×105261431² = 22159937712335522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105261397 and 105261406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105261451) 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, 4784600 + ... + 4784621.

It is an arithmetic number, because the mean of its divisors is an integer number (28707666).

Almost surely, 2^105261431 is an apocalyptic number.

105261431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

105261431 is a deficient number, since it is larger than the sum of its proper divisors (9569233).

105261431 is an equidigital number, since it uses as much as digits as its factorization.

105261431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9569232.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 105261431 is about 10259.6993620671. The cubic root of 105261431 is about 472.1606136701.

The spelling of 105261431 in words is "one hundred five million, two hundred sixty-one thousand, four hundred thirty-one".