211532413 has 2 divisors, whose sum is σ = 211532414. Its totient is φ = 211532412.

The previous prime is 211532401. The next prime is 211532429. The reversal of 211532413 is 314235112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151733124 + 59799289 = 12318^2 + 7733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211532413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211532443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105766206 + 105766207.

It is an arithmetic number, because the mean of its divisors is an integer number (105766207).

Almost surely, 2^211532413 is an apocalyptic number.

It is an amenable number.

211532413 is a deficient number, since it is larger than the sum of its proper divisors (1).

211532413 is an equidigital number, since it uses as much as digits as its factorization.

211532413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 211532413 is about 14544.1539114518. The cubic root of 211532413 is about 595.8344932161.

Adding to 211532413 its reverse (314235112), we get a palindrome (525767525).

The spelling of 211532413 in words is "two hundred eleven million, five hundred thirty-two thousand, four hundred thirteen".