40151213 has 2 divisors, whose sum is σ = 40151214. Its totient is φ = 40151212.

The previous prime is 40151203. The next prime is 40151219. The reversal of 40151213 is 31215104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30891364 + 9259849 = 5558^2 + 3043^2 .

It is a cyclic number.

It is not a de Polignac number, because 40151213 - 2⁶ = 40151149 is a prime.

It is a super-2 number, since 2×40151213² = 3224239810742738, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40151191 and 40151200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40151219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20075606 + 20075607.

It is an arithmetic number, because the mean of its divisors is an integer number (20075607).

Almost surely, 2^40151213 is an apocalyptic number.

It is an amenable number.

40151213 is a deficient number, since it is larger than the sum of its proper divisors (1).

40151213 is an equidigital number, since it uses as much as digits as its factorization.

40151213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 40151213 is about 6336.4984810225. The cubic root of 40151213 is about 342.4255984161.

Adding to 40151213 its reverse (31215104), we get a palindrome (71366317).

The spelling of 40151213 in words is "forty million, one hundred fifty-one thousand, two hundred thirteen".