31540044019 has 16 divisors (see below), whose sum is σ = 36546274656. Its totient is φ = 26900953600.

The previous prime is 31540044017. The next prime is 31540044059. The reversal of 31540044019 is 91044004513.

It is a cyclic number.

It is not a de Polignac number, because 31540044019 - 2¹ = 31540044017 is a prime.

It is a super-2 number, since 2×31540044019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31540044017) 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 15 ways as a sum of consecutive naturals, for example, 206752 + ... + 325309.

It is an arithmetic number, because the mean of its divisors is an integer number (2284142166).

Almost surely, 2^31540044019 is an apocalyptic number.

31540044019 is a deficient number, since it is larger than the sum of its proper divisors (5006230637).

31540044019 is a wasteful number, since it uses less digits than its factorization.

31540044019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532406.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 31540044019 in words is "thirty-one billion, five hundred forty million, forty-four thousand, nineteen".