31461571340 has 24 divisors (see below), whose sum is σ = 66078869472. Its totient is φ = 12582805760.

The previous prime is 31461571331. The next prime is 31461571403. The reversal of 31461571340 is 4317516413.

It is a self number, because there is not a number n which added to its sum of digits gives 31461571340.

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 7 ways as a sum of consecutive naturals, for example, 32180 + ... + 252900.

It is an arithmetic number, because the mean of its divisors is an integer number (2753286228).

Almost surely, 2^31461571340 is an apocalyptic number.

It is an amenable number.

31461571340 is an abundant number, since it is smaller than the sum of its proper divisors (34617298132).

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

31461571340 is a wasteful number, since it uses less digits than its factorization.

31461571340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227857 (or 227855 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 31461571340 in words is "thirty-one billion, four hundred sixty-one million, five hundred seventy-one thousand, three hundred forty".