31604066543 has 16 divisors (see below), whose sum is σ = 36585407040. Its totient is φ = 26740786176.

The previous prime is 31604066497. The next prime is 31604066551. The reversal of 31604066543 is 34566040613.

It is not a de Polignac number, because 31604066543 - 2⁶ = 31604066479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31604066497 and 31604066506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31604066443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204305 + ... + 323957.

It is an arithmetic number, because the mean of its divisors is an integer number (2286587940).

Almost surely, 2^31604066543 is an apocalyptic number.

31604066543 is a deficient number, since it is larger than the sum of its proper divisors (4981340497).

31604066543 is a wasteful number, since it uses less digits than its factorization.

31604066543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120146.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 31604066543 in words is "thirty-one billion, six hundred four million, sixty-six thousand, five hundred forty-three".