105204631 has 4 divisors (see below), whose sum is σ = 120233872. Its totient is φ = 90175392.

The previous prime is 105204623. The next prime is 105204637. The reversal of 105204631 is 136402501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136402501 = 19 ⋅7179079.

It is a cyclic number.

It is not a de Polignac number, because 105204631 - 2³ = 105204623 is a prime.

It is a super-2 number, since 2×105204631² = 22136028767692322, which 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 (105204637) 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, 7514610 + ... + 7514623.

It is an arithmetic number, because the mean of its divisors is an integer number (30058468).

Almost surely, 2^105204631 is an apocalyptic number.

105204631 is a deficient number, since it is larger than the sum of its proper divisors (15029241).

105204631 is an equidigital number, since it uses as much as digits as its factorization.

105204631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15029240.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 105204631 is about 10256.9308762417. The cubic root of 105204631 is about 472.0756710407.

It can be divided in two parts, 10520 and 4631, that added together give a palindrome (15151).

The spelling of 105204631 in words is "one hundred five million, two hundred four thousand, six hundred thirty-one".