40193621231 has 12 divisors (see below), whose sum is σ = 43883199000. Its totient is φ = 36765117648.

The previous prime is 40193621201. The next prime is 40193621239. The reversal of 40193621231 is 13212639104.

It is a de Polignac number, because none of the positive numbers 2^k-40193621231 is a prime.

It is a super-2 number, since 2×40193621231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40193621239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1909181 + ... + 1930118.

It is an arithmetic number, because the mean of its divisors is an integer number (3656933250).

Almost surely, 2^40193621231 is an apocalyptic number.

40193621231 is a deficient number, since it is larger than the sum of its proper divisors (3689577769).

40193621231 is a wasteful number, since it uses less digits than its factorization.

40193621231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839366 (or 3839347 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 40193621231 in words is "forty billion, one hundred ninety-three million, six hundred twenty-one thousand, two hundred thirty-one".