16215113 has 4 divisors (see below), whose sum is σ = 17068560. Its totient is φ = 15361668.

The previous prime is 16215109. The next prime is 16215119. The reversal of 16215113 is 31151261.

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: 31151261 = 199 ⋅156539.

It is a cyclic number.

It is not a de Polignac number, because 16215113 - 2² = 16215109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16215119) 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, 426695 + ... + 426732.

It is an arithmetic number, because the mean of its divisors is an integer number (4267140).

Almost surely, 2^16215113 is an apocalyptic number.

It is an amenable number.

16215113 is a deficient number, since it is larger than the sum of its proper divisors (853447).

16215113 is an equidigital number, since it uses as much as digits as its factorization.

16215113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853446.

The product of its digits is 180, while the sum is 20.

The square root of 16215113 is about 4026.7993493592. The cubic root of 16215113 is about 253.1084590726.

Adding to 16215113 its reverse (31151261), we get a palindrome (47366374).

The spelling of 16215113 in words is "sixteen million, two hundred fifteen thousand, one hundred thirteen".