40213013 has 4 divisors (see below), whose sum is σ = 40403808. Its totient is φ = 40022220.

The previous prime is 40213001. The next prime is 40213021. The reversal of 40213013 is 31031204.

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 40213013 - 2¹⁶ = 40147477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40213073) 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, 95081 + ... + 95502.

It is an arithmetic number, because the mean of its divisors is an integer number (10100952).

Almost surely, 2^40213013 is an apocalyptic number.

It is an amenable number.

40213013 is a deficient number, since it is larger than the sum of its proper divisors (190795).

40213013 is a wasteful number, since it uses less digits than its factorization.

40213013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190794.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 40213013 is about 6341.3731162896. The cubic root of 40213013 is about 342.6011933927.

Adding to 40213013 its reverse (31031204), we get a palindrome (71244217).

The spelling of 40213013 in words is "forty million, two hundred thirteen thousand, thirteen".