40313684021 has 12 divisors (see below), whose sum is σ = 43658950500. Its totient is φ = 37207797120.

The previous prime is 40313683997. The next prime is 40313684023. The reversal of 40313684021 is 12048631304.

It can be written as a sum of positive squares in 6 ways, for example, as 85359121 + 40228324900 = 9239^2 + 200570^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40313684021 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 (40313684023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2399711 + ... + 2416451.

It is an arithmetic number, because the mean of its divisors is an integer number (3638245875).

Almost surely, 2^40313684021 is an apocalyptic number.

It is an amenable number.

40313684021 is a deficient number, since it is larger than the sum of its proper divisors (3345266479).

40313684021 is a wasteful number, since it uses less digits than its factorization.

40313684021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31016 (or 31003 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 40313684021 in words is "forty billion, three hundred thirteen million, six hundred eighty-four thousand, twenty-one".