31345066550 has 96 divisors (see below), whose sum is σ = 69003244224. Its totient is φ = 10370880000.

The previous prime is 31345066481. The next prime is 31345066553. The reversal of 31345066550 is 5566054313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31345066553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1117700 + ... + 1145400.

It is an arithmetic number, because the mean of its divisors is an integer number (718783794).

Almost surely, 2^31345066550 is an apocalyptic number.

31345066550 is an abundant number, since it is smaller than the sum of its proper divisors (37658177674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31345066550 is a wasteful number, since it uses less digits than its factorization.

31345066550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27834 (or 27829 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 31345066550 in words is "thirty-one billion, three hundred forty-five million, sixty-six thousand, five hundred fifty".