40213313 has 16 divisors (see below), whose sum is σ = 48956544. Its totient is φ = 32244480.

The previous prime is 40213309. The next prime is 40213319. The reversal of 40213313 is 31331204.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40213313 - 2² = 40213309 is a prime.

It is a super-2 number, since 2×40213313² = 3234221084871938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 40213291 and 40213300.

It is not an unprimeable number, because it can be changed into a prime (40213319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20606 + ... + 22472.

It is an arithmetic number, because the mean of its divisors is an integer number (3059784).

Almost surely, 2^40213313 is an apocalyptic number.

It is an amenable number.

40213313 is a deficient number, since it is larger than the sum of its proper divisors (8743231).

40213313 is a wasteful number, since it uses less digits than its factorization.

40213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 40213313 is about 6341.3967704284. The cubic root of 40213313 is about 342.6020453565.

Adding to 40213313 its reverse (31331204), we get a palindrome (71544517).

The spelling of 40213313 in words is "forty million, two hundred thirteen thousand, three hundred thirteen".