216426351 has 4 divisors (see below), whose sum is σ = 288568472. Its totient is φ = 144284232.

The previous prime is 216426341. The next prime is 216426421. The reversal of 216426351 is 153624612.

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

It is not a de Polignac number, because 216426351 - 2⁵ = 216426319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216426341) 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, 36071056 + ... + 36071061.

It is an arithmetic number, because the mean of its divisors is an integer number (72142118).

Almost surely, 2^216426351 is an apocalyptic number.

216426351 is a deficient number, since it is larger than the sum of its proper divisors (72142121).

216426351 is an equidigital number, since it uses as much as digits as its factorization.

216426351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72142120.

The product of its digits is 8640, while the sum is 30.

The square root of 216426351 is about 14711.4360617854. The cubic root of 216426351 is about 600.3945099907.

The spelling of 216426351 in words is "two hundred sixteen million, four hundred twenty-six thousand, three hundred fifty-one".