31302543144 has 32 divisors (see below), whose sum is σ = 78263334720. Its totient is φ = 10433250816.

The previous prime is 31302543143. The next prime is 31302543157. The reversal of 31302543144 is 44134520313.

It is not an unprimeable number, because it can be changed into a prime (31302543143) 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, 249997 + ... + 353699.

It is an arithmetic number, because the mean of its divisors is an integer number (2445729210).

Almost surely, 2^31302543144 is an apocalyptic number.

It is an amenable number.

31302543144 is an abundant number, since it is smaller than the sum of its proper divisors (46960791576).

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

31302543144 is a wasteful number, since it uses less digits than its factorization.

31302543144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116289 (or 116285 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 31302543144 in words is "thirty-one billion, three hundred two million, five hundred forty-three thousand, one hundred forty-four".