105450031 has 6 divisors (see below), whose sum is σ = 112018160. Its totient is φ = 99246816.

The previous prime is 105450011. The next prime is 105450041. The reversal of 105450031 is 130054501.

It is a de Polignac number, because none of the positive numbers 2^k-105450031 is a prime.

It is a super-2 number, since 2×105450031² = 22239418075801922, 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 = 105449990 and 105450008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105450011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 182151 + ... + 182728.

Almost surely, 2^105450031 is an apocalyptic number.

105450031 is a deficient number, since it is larger than the sum of its proper divisors (6568129).

105450031 is an equidigital number, since it uses as much as digits as its factorization.

105450031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364913 (or 364896 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 105450031 is about 10268.8865511310. The cubic root of 105450031 is about 472.4424401016.

The spelling of 105450031 in words is "one hundred five million, four hundred fifty thousand, thirty-one".