31504323603 has 4 divisors (see below), whose sum is σ = 42005764808. Its totient is φ = 21002882400.

The previous prime is 31504323589. The next prime is 31504323611. The reversal of 31504323603 is 30632340513.

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

It is not a de Polignac number, because 31504323603 - 2¹² = 31504319507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31504343603) 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 3 ways as a sum of consecutive naturals, for example, 5250720598 + ... + 5250720603.

It is an arithmetic number, because the mean of its divisors is an integer number (10501441202).

Almost surely, 2^31504323603 is an apocalyptic number.

31504323603 is a deficient number, since it is larger than the sum of its proper divisors (10501441205).

31504323603 is a wasteful number, since it uses less digits than its factorization.

31504323603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501441204.

The product of its (nonzero) digits is 19440, while the sum is 30.

The spelling of 31504323603 in words is "thirty-one billion, five hundred four million, three hundred twenty-three thousand, six hundred three".