105113391 has 16 divisors (see below), whose sum is σ = 142408800. Its totient is φ = 68956160.

The previous prime is 105113383. The next prime is 105113399. The reversal of 105113391 is 193311501.

It is an interprime number because it is at equal distance from previous prime (105113383) and next prime (105113399).

It is a cyclic number.

It is not a de Polignac number, because 105113391 - 2³ = 105113383 is a prime.

It is a super-2 number, since 2×105113391² = 22097649935037762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105113399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49471 + ... + 51551.

It is an arithmetic number, because the mean of its divisors is an integer number (8900550).

Almost surely, 2^105113391 is an apocalyptic number.

105113391 is a deficient number, since it is larger than the sum of its proper divisors (37295409).

105113391 is a wasteful number, since it uses less digits than its factorization.

105113391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 105113391 is about 10252.4821872559. The cubic root of 105113391 is about 471.9391604409.

Adding to 105113391 its reverse (193311501), we get a palindrome (298424892).

The spelling of 105113391 in words is "one hundred five million, one hundred thirteen thousand, three hundred ninety-one".