40221432312 has 32 divisors (see below), whose sum is σ = 100565556480. Its totient is φ = 13405547360.

The previous prime is 40221432301. The next prime is 40221432313. The reversal of 40221432312 is 21323412204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221432313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115387 + ... + 306197.

It is an arithmetic number, because the mean of its divisors is an integer number (3142673640).

Almost surely, 2^40221432312 is an apocalyptic number.

It is an amenable number.

40221432312 is an abundant number, since it is smaller than the sum of its proper divisors (60344124168).

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

40221432312 is a wasteful number, since it uses less digits than its factorization.

40221432312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199603 (or 199599 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40221432312 its reverse (21323412204), we get a palindrome (61544844516).

The spelling of 40221432312 in words is "forty billion, two hundred twenty-one million, four hundred thirty-two thousand, three hundred twelve".