105331431 has 4 divisors (see below), whose sum is σ = 140441912. Its totient is φ = 70220952.

The previous prime is 105331423. The next prime is 105331433. The reversal of 105331431 is 134133501.

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

It is not a de Polignac number, because 105331431 - 2³ = 105331423 is a prime.

It is a super-2 number, since 2×105331431² = 22189420713015522, 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 = 105331398 and 105331407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105331433) 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, 17555236 + ... + 17555241.

It is an arithmetic number, because the mean of its divisors is an integer number (35110478).

Almost surely, 2^105331431 is an apocalyptic number.

105331431 is a deficient number, since it is larger than the sum of its proper divisors (35110481).

105331431 is an equidigital number, since it uses as much as digits as its factorization.

105331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35110480.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 105331431 is about 10263.1102011038. The cubic root of 105331431 is about 472.2652544642.

Adding to 105331431 its reverse (134133501), we get a palindrome (239464932).

The spelling of 105331431 in words is "one hundred five million, three hundred thirty-one thousand, four hundred thirty-one".