40431201331020 has 96 divisors (see below), whose sum is σ = 118578585388032. Its totient is φ = 10273673549568.

The previous prime is 40431201331019. The next prime is 40431201331021. The reversal of 40431201331020 is 2013310213404.

It is a happy number.

40431201331020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40431201331019) and next prime (40431201331021).

It is a super-2 number, since 2×40431201331020² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40431201331021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55336627 + ... + 56062506.

It is an arithmetic number, because the mean of its divisors is an integer number (1235193597792).

Almost surely, 2^{40431201331020} is an apocalyptic number.

It is an amenable number.

40431201331020 is an abundant number, since it is smaller than the sum of its proper divisors (78147384057012).

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

40431201331020 is a wasteful number, since it uses less digits than its factorization.

40431201331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111399431 (or 111399429 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 40431201331020 its reverse (2013310213404), we get a palindrome (42444511544424).

The spelling of 40431201331020 in words is "forty trillion, four hundred thirty-one billion, two hundred one million, three hundred thirty-one thousand, twenty".