31304041240 has 32 divisors (see below), whose sum is σ = 70439135760. Its totient is φ = 12520720000.

The previous prime is 31304041207. The next prime is 31304041243. The reversal of 31304041240 is 4214040313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304041243) 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, 1045275 + ... + 1074805.

Almost surely, 2^31304041240 is an apocalyptic number.

It is an amenable number.

31304041240 is an abundant number, since it is smaller than the sum of its proper divisors (39135094520).

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

31304041240 is a wasteful number, since it uses less digits than its factorization.

31304041240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56043 (or 56039 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31304041240 its reverse (4214040313), we get a palindrome (35518081553).

The spelling of 31304041240 in words is "thirty-one billion, three hundred four million, forty-one thousand, two hundred forty".