106318621 has 4 divisors (see below), whose sum is σ = 106546752. Its totient is φ = 106090492.

The previous prime is 106318613. The next prime is 106318631. The reversal of 106318621 is 126813601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126813601 = 823 ⋅154087.

It is a cyclic number.

It is not a de Polignac number, because 106318621 - 2³ = 106318613 is a prime.

It is a super-2 number, since 2×106318621² = 22607298342683282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106318621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106318631) 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, 113365 + ... + 114298.

It is an arithmetic number, because the mean of its divisors is an integer number (26636688).

Almost surely, 2^106318621 is an apocalyptic number.

It is an amenable number.

106318621 is a deficient number, since it is larger than the sum of its proper divisors (228131).

106318621 is an equidigital number, since it uses as much as digits as its factorization.

106318621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228130.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 106318621 is about 10311.0921342019. The cubic root of 106318621 is about 473.7360613457.

The spelling of 106318621 in words is "one hundred six million, three hundred eighteen thousand, six hundred twenty-one".