40043381316431 has 4 divisors (see below), whose sum is σ = 40043848005000. Its totient is φ = 40042914627864.

The previous prime is 40043381316427. The next prime is 40043381316443. The reversal of 40043381316431 is 13461318334004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40043381316431 - 2² = 40043381316427 is a prime.

It is a super-2 number, since 2×40043381316431² (a number of 28 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 (40043381316401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233215556 + ... + 233387193.

It is an arithmetic number, because the mean of its divisors is an integer number (10010962001250).

Almost surely, 2^{40043381316431} is an apocalyptic number.

40043381316431 is a deficient number, since it is larger than the sum of its proper divisors (466688569).

40043381316431 is an equidigital number, since it uses as much as digits as its factorization.

40043381316431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466688568.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 40043381316431 in words is "forty trillion, forty-three billion, three hundred eighty-one million, three hundred sixteen thousand, four hundred thirty-one".