31553505345 has 32 divisors (see below), whose sum is σ = 51358995072. Its totient is φ = 16539512832.

The previous prime is 31553505289. The next prime is 31553505349. The reversal of 31553505345 is 54350535513.

It is not a de Polignac number, because 31553505345 - 2¹¹ = 31553503297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31553505349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174627 + ... + 305943.

It is an arithmetic number, because the mean of its divisors is an integer number (1604968596).

Almost surely, 2^31553505345 is an apocalyptic number.

It is an amenable number.

31553505345 is a deficient number, since it is larger than the sum of its proper divisors (19805489727).

31553505345 is a wasteful number, since it uses less digits than its factorization.

31553505345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131601.

The product of its (nonzero) digits is 337500, while the sum is 39.

The spelling of 31553505345 in words is "thirty-one billion, five hundred fifty-three million, five hundred five thousand, three hundred forty-five".