7212315 has 16 divisors (see below), whose sum is σ = 12589056. Its totient is φ = 3496800.

The previous prime is 7212311. The next prime is 7212319. The reversal of 7212315 is 5132127.

7212315 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7212311) and next prime (7212319).

It is not a de Polignac number, because 7212315 - 2² = 7212311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7212291 and 7212300.

It is not an unprimeable number, because it can be changed into a prime (7212311) 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, 21691 + ... + 22020.

It is an arithmetic number, because the mean of its divisors is an integer number (786816).

Almost surely, 2^7212315 is an apocalyptic number.

7212315 is a deficient number, since it is larger than the sum of its proper divisors (5376741).

7212315 is a wasteful number, since it uses less digits than its factorization.

7212315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43730.

The product of its digits is 420, while the sum is 21.

The square root of 7212315 is about 2685.5753573490. The cubic root of 7212315 is about 193.2079068216.

The spelling of 7212315 in words is "seven million, two hundred twelve thousand, three hundred fifteen".