31140315340 has 24 divisors (see below), whose sum is σ = 66915470160. Its totient is φ = 12166448448.

The previous prime is 31140315337. The next prime is 31140315389. The reversal of 31140315340 is 4351304113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18103975 + ... + 18105694.

It is an arithmetic number, because the mean of its divisors is an integer number (2788144590).

Almost surely, 2^31140315340 is an apocalyptic number.

It is an amenable number.

31140315340 is an abundant number, since it is smaller than the sum of its proper divisors (35775154820).

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

31140315340 is a wasteful number, since it uses less digits than its factorization.

31140315340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36209721 (or 36209719 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 31140315340 its reverse (4351304113), we get a palindrome (35491619453).

The spelling of 31140315340 in words is "thirty-one billion, one hundred forty million, three hundred fifteen thousand, three hundred forty".