40013431321123 has 8 divisors (see below), whose sum is σ = 43091467222608. Its totient is φ = 36935406797664.

The previous prime is 40013431321091. The next prime is 40013431321147. The reversal of 40013431321123 is 32112313431004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40013431321123 - 2⁵ = 40013431321091 is a prime.

It is a super-2 number, since 2×40013431321123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40013431321091 and 40013431321100.

It is not an unprimeable number, because it can be changed into a prime (40013431381123) 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, 5329440 + ... + 10412962.

It is an arithmetic number, because the mean of its divisors is an integer number (5386433402826).

Almost surely, 2^{40013431321123} is an apocalyptic number.

40013431321123 is a deficient number, since it is larger than the sum of its proper divisors (3078035901485).

40013431321123 is a wasteful number, since it uses less digits than its factorization.

40013431321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689013.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 40013431321123 its reverse (32112313431004), we get a palindrome (72125744752127).

The spelling of 40013431321123 in words is "forty trillion, thirteen billion, four hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-three".