326216253 has 16 divisors (see below), whose sum is σ = 474926400. Its totient is φ = 197527680.

The previous prime is 326216249. The next prime is 326216257. The reversal of 326216253 is 352612623.

It is an interprime number because it is at equal distance from previous prime (326216249) and next prime (326216257).

It is not a de Polignac number, because 326216253 - 2² = 326216249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 326216253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326216257) 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, 38703 + ... + 46371.

It is an arithmetic number, because the mean of its divisors is an integer number (29682900).

Almost surely, 2^326216253 is an apocalyptic number.

326216253 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

326216253 is a deficient number, since it is larger than the sum of its proper divisors (148710147).

326216253 is a wasteful number, since it uses less digits than its factorization.

326216253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8972.

The product of its digits is 12960, while the sum is 30.

The square root of 326216253 is about 18061.4576654267. The cubic root of 326216253 is about 688.3910231294.

Adding to 326216253 its reverse (352612623), we get a palindrome (678828876).

The spelling of 326216253 in words is "three hundred twenty-six million, two hundred sixteen thousand, two hundred fifty-three".