40100213 has 2 divisors, whose sum is σ = 40100214. Its totient is φ = 40100212.

The previous prime is 40100191. The next prime is 40100219. The reversal of 40100213 is 31200104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38850289 + 1249924 = 6233^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 40100213 - 2⁶ = 40100149 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40100194 and 40100203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40100219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20050106 + 20050107.

It is an arithmetic number, because the mean of its divisors is an integer number (20050107).

Almost surely, 2^40100213 is an apocalyptic number.

It is an amenable number.

40100213 is a deficient number, since it is larger than the sum of its proper divisors (1).

40100213 is an equidigital number, since it uses as much as digits as its factorization.

40100213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 40100213 is about 6332.4728976917. The cubic root of 40100213 is about 342.2805541899.

Adding to 40100213 its reverse (31200104), we get a palindrome (71300317).

The spelling of 40100213 in words is "forty million, one hundred thousand, two hundred thirteen".