31034340140 has 96 divisors (see below), whose sum is σ = 71638862400. Its totient is φ = 11279600640.

The previous prime is 31034340121. The next prime is 31034340143. The reversal of 31034340140 is 4104343013.

It is not an unprimeable number, because it can be changed into a prime (31034340143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2844095 + ... + 2854985.

It is an arithmetic number, because the mean of its divisors is an integer number (746238150).

Almost surely, 2^31034340140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31034340140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35819431200).

31034340140 is an abundant number, since it is smaller than the sum of its proper divisors (40604522260).

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

31034340140 is a wasteful number, since it uses less digits than its factorization.

31034340140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10980 (or 10944 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31034340140 its reverse (4104343013), we get a palindrome (35138683153).

The spelling of 31034340140 in words is "thirty-one billion, thirty-four million, three hundred forty thousand, one hundred forty".