31485717460 has 24 divisors (see below), whose sum is σ = 66563771400. Its totient is φ = 12509760384.

The previous prime is 31485717443. The next prime is 31485717463. The reversal of 31485717460 is 6471758413.

It can be written as a sum of positive squares in 4 ways, for example, as 2388863376 + 29096854084 = 48876^2 + 170578^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31485717460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31485717463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5279859 + ... + 5285818.

It is an arithmetic number, because the mean of its divisors is an integer number (2773490475).

Almost surely, 2^31485717460 is an apocalyptic number.

It is an amenable number.

31485717460 is an abundant number, since it is smaller than the sum of its proper divisors (35078053940).

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

31485717460 is a wasteful number, since it uses less digits than its factorization.

31485717460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10565835 (or 10565833 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 31485717460 in words is "thirty-one billion, four hundred eighty-five million, seven hundred seventeen thousand, four hundred sixty".