213006331 has 2 divisors, whose sum is σ = 213006332. Its totient is φ = 213006330.

The previous prime is 213006259. The next prime is 213006337. The reversal of 213006331 is 133600312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213006331 - 2¹³ = 212998139 is a prime.

It is a super-2 number, since 2×213006331² = 90743394092163122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213006299 and 213006308.

It is not a weakly prime, because it can be changed into another prime (213006337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106503165 + 106503166.

It is an arithmetic number, because the mean of its divisors is an integer number (106503166).

Almost surely, 2^213006331 is an apocalyptic number.

213006331 is a deficient number, since it is larger than the sum of its proper divisors (1).

213006331 is an equidigital number, since it uses as much as digits as its factorization.

213006331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 213006331 is about 14594.7364142008. The cubic root of 213006331 is about 597.2151788753.

Adding to 213006331 its reverse (133600312), we get a palindrome (346606643).

The spelling of 213006331 in words is "two hundred thirteen million, six thousand, three hundred thirty-one".