106322391 has 12 divisors (see below), whose sum is σ = 175516432. Its totient is φ = 60755616.

The previous prime is 106322371. The next prime is 106322417. The reversal of 106322391 is 193223601.

106322391 is a `hidden beast` number, since 1 + 0 + 632 + 23 + 9 + 1 = 666.

It is not a de Polignac number, because 106322391 - 2⁹ = 106321879 is a prime.

It is a super-2 number, since 2×106322391² = 22608901655913762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106322371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 843766 + ... + 843891.

Almost surely, 2^106322391 is an apocalyptic number.

106322391 is a deficient number, since it is larger than the sum of its proper divisors (69194041).

106322391 is a wasteful number, since it uses less digits than its factorization.

106322391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687670 (or 1687667 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 106322391 is about 10311.2749454178. The cubic root of 106322391 is about 473.7416607532.

Adding to 106322391 its reverse (193223601), we get a palindrome (299545992).

The spelling of 106322391 in words is "one hundred six million, three hundred twenty-two thousand, three hundred ninety-one".