214520531 has 4 divisors (see below), whose sum is σ = 214561200. Its totient is φ = 214479864.

The previous prime is 214520503. The next prime is 214520539. The reversal of 214520531 is 135025412.

214520531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214520531 is a prime.

It is a super-2 number, since 2×214520531² = 92038116441043922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214520497 and 214520506.

It is not an unprimeable number, because it can be changed into a prime (214520539) 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, 10991 + ... + 23448.

It is an arithmetic number, because the mean of its divisors is an integer number (53640300).

Almost surely, 2^214520531 is an apocalyptic number.

214520531 is a deficient number, since it is larger than the sum of its proper divisors (40669).

214520531 is an equidigital number, since it uses as much as digits as its factorization.

214520531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40668.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 214520531 is about 14646.5194158885. The cubic root of 214520531 is about 598.6269817277.

Adding to 214520531 its reverse (135025412), we get a palindrome (349545943).

The spelling of 214520531 in words is "two hundred fourteen million, five hundred twenty thousand, five hundred thirty-one".