40021312230 has 48 divisors (see below), whose sum is σ = 104066623440. Its totient is φ = 10671200064.

The previous prime is 40021312217. The next prime is 40021312237. The reversal of 40021312230 is 3221312004.

40021312230 is a `hidden beast` number, since 400 + 2 + 1 + 31 + 2 + 230 = 666.

It is a super-2 number, since 2×40021312230² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021312237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1115349 + ... + 1150671.

It is an arithmetic number, because the mean of its divisors is an integer number (2168054655).

Almost surely, 2^40021312230 is an apocalyptic number.

40021312230 is an abundant number, since it is smaller than the sum of its proper divisors (64045311210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40021312230 is a wasteful number, since it uses less digits than its factorization.

40021312230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47925 (or 47922 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 40021312230 its reverse (3221312004), we get a palindrome (43242624234).

The spelling of 40021312230 in words is "forty billion, twenty-one million, three hundred twelve thousand, two hundred thirty".