40313213 has 4 divisors (see below), whose sum is σ = 40690080. Its totient is φ = 39936348.

The previous prime is 40313201. The next prime is 40313243. The reversal of 40313213 is 31231304.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40313213 - 2¹⁰ = 40312189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40313191 and 40313200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40313243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188273 + ... + 188486.

It is an arithmetic number, because the mean of its divisors is an integer number (10172520).

Almost surely, 2^40313213 is an apocalyptic number.

It is an amenable number.

40313213 is a deficient number, since it is larger than the sum of its proper divisors (376867).

40313213 is a wasteful number, since it uses less digits than its factorization.

40313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376866.

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

The square root of 40313213 is about 6349.2686980470. The cubic root of 40313213 is about 342.8855140130.

Adding to 40313213 its reverse (31231304), we get a palindrome (71544517).

The spelling of 40313213 in words is "forty million, three hundred thirteen thousand, two hundred thirteen".