40321223013 has 4 divisors (see below), whose sum is σ = 53761630688. Its totient is φ = 26880815340.

The previous prime is 40321223011. The next prime is 40321223021. The reversal of 40321223013 is 31032212304.

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 not a de Polignac number, because 40321223013 - 2¹ = 40321223011 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 (40321223011) 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, 6720203833 + ... + 6720203838.

It is an arithmetic number, because the mean of its divisors is an integer number (13440407672).

Almost surely, 2^40321223013 is an apocalyptic number.

It is an amenable number.

40321223013 is a deficient number, since it is larger than the sum of its proper divisors (13440407675).

40321223013 is a wasteful number, since it uses less digits than its factorization.

40321223013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440407674.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 40321223013 its reverse (31032212304), we get a palindrome (71353435317).

The spelling of 40321223013 in words is "forty billion, three hundred twenty-one million, two hundred twenty-three thousand, thirteen".