214721315 has 4 divisors (see below), whose sum is σ = 257665584. Its totient is φ = 171777048.

The previous prime is 214721303. The next prime is 214721327. The reversal of 214721315 is 513127412.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (214721303) and next prime (214721327).

It is a cyclic number.

It is not a de Polignac number, because 214721315 - 2¹⁸ = 214459171 is a prime.

It is a super-2 number, since 2×214721315² = 92210486230658450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21472127 + ... + 21472136.

It is an arithmetic number, because the mean of its divisors is an integer number (64416396).

Almost surely, 2^214721315 is an apocalyptic number.

214721315 is a deficient number, since it is larger than the sum of its proper divisors (42944269).

214721315 is an equidigital number, since it uses as much as digits as its factorization.

214721315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42944268.

The product of its digits is 1680, while the sum is 26.

The square root of 214721315 is about 14653.3721374979. The cubic root of 214721315 is about 598.8136883946.

Adding to 214721315 its reverse (513127412), we get a palindrome (727848727).

The spelling of 214721315 in words is "two hundred fourteen million, seven hundred twenty-one thousand, three hundred fifteen".