214520731 has 2 divisors, whose sum is σ = 214520732. Its totient is φ = 214520730.

The previous prime is 214520723. The next prime is 214520741. The reversal of 214520731 is 137025412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 214520731 - 2³ = 214520723 is a prime.

It is a super-3 number, since 3×214520731³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 214520696 and 214520705.

It is not a weakly prime, because it can be changed into another prime (214520741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107260365 + 107260366.

It is an arithmetic number, because the mean of its divisors is an integer number (107260366).

Almost surely, 2^214520731 is an apocalyptic number.

214520731 is a deficient number, since it is larger than the sum of its proper divisors (1).

214520731 is an equidigital number, since it uses as much as digits as its factorization.

214520731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 214520731 is about 14646.5262434476. The cubic root of 214520731 is about 598.6271677632.

The spelling of 214520731 in words is "two hundred fourteen million, five hundred twenty thousand, seven hundred thirty-one".