21110313 has 32 divisors (see below), whose sum is σ = 33488640. Its totient is φ = 11577600.

The previous prime is 21110263. The next prime is 21110363. The reversal of 21110313 is 31301112.

It is an interprime number because it is at equal distance from previous prime (21110263) and next prime (21110363).

It is not a de Polignac number, because 21110313 - 2⁶ = 21110249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78343 + ... + 78611.

It is an arithmetic number, because the mean of its divisors is an integer number (1046520).

Almost surely, 2^21110313 is an apocalyptic number.

It is an amenable number.

21110313 is a deficient number, since it is larger than the sum of its proper divisors (12378327).

21110313 is a wasteful number, since it uses less digits than its factorization.

21110313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 21110313 is about 4594.5960649441. The cubic root of 21110313 is about 276.3746618349.

Adding to 21110313 its reverse (31301112), we get a palindrome (52411425).

The spelling of 21110313 in words is "twenty-one million, one hundred ten thousand, three hundred thirteen".