31505535340 has 48 divisors (see below), whose sum is σ = 66524603040. Its totient is φ = 12533253120.

The previous prime is 31505535337. The next prime is 31505535371. The reversal of 31505535340 is 4353550513.

It is a junction number, because it is equal to n+sod(n) for n = 31505535296 and 31505535305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3056916 + ... + 3067204.

It is an arithmetic number, because the mean of its divisors is an integer number (1385929230).

Almost surely, 2^31505535340 is an apocalyptic number.

It is an amenable number.

31505535340 is an abundant number, since it is smaller than the sum of its proper divisors (35019067700).

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

31505535340 is a wasteful number, since it uses less digits than its factorization.

31505535340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11122 (or 11120 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 34.

The spelling of 31505535340 in words is "thirty-one billion, five hundred five million, five hundred thirty-five thousand, three hundred forty".