40431041656231 has 16 divisors (see below), whose sum is σ = 42188143269888. Its totient is φ = 38702973636000.

The previous prime is 40431041656183. The next prime is 40431041656267. The reversal of 40431041656231 is 13265614013404.

It is a cyclic number.

It is not a de Polignac number, because 40431041656231 - 2¹⁷ = 40431041525159 is a prime.

It is a super-3 number, since 3×40431041656231³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431041656331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2745661 + ... + 9402166.

It is an arithmetic number, because the mean of its divisors is an integer number (2636758954368).

Almost surely, 2^{40431041656231} is an apocalyptic number.

40431041656231 is a deficient number, since it is larger than the sum of its proper divisors (1757101613657).

40431041656231 is a wasteful number, since it uses less digits than its factorization.

40431041656231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12149022.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 40431041656231 its reverse (13265614013404), we get a palindrome (53696655669635).

The spelling of 40431041656231 in words is "forty trillion, four hundred thirty-one billion, forty-one million, six hundred fifty-six thousand, two hundred thirty-one".