40342431031 has 8 divisors (see below), whose sum is σ = 47046567200. Its totient is φ = 34579226304.

The previous prime is 40342431023. The next prime is 40342431097. The reversal of 40342431031 is 13013424304.

It is not a de Polignac number, because 40342431031 - 2³ = 40342431023 is a prime.

It is a super-2 number, since 2×40342431031² (a number of 22 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 = 40342430987 and 40342431005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342731031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58807866 + ... + 58808551.

It is an arithmetic number, because the mean of its divisors is an integer number (5880820900).

Almost surely, 2^40342431031 is an apocalyptic number.

40342431031 is a deficient number, since it is larger than the sum of its proper divisors (6704136169).

40342431031 is an equidigital number, since it uses as much as digits as its factorization.

40342431031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117616438 (or 117616424 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 40342431031 its reverse (13013424304), we get a palindrome (53355855335).

The spelling of 40342431031 in words is "forty billion, three hundred forty-two million, four hundred thirty-one thousand, thirty-one".