31012734144 has 112 divisors (see below), whose sum is σ = 93827973888. Its totient is φ = 8855927808.

The previous prime is 31012734121. The next prime is 31012734161. The reversal of 31012734144 is 44143721013.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2969059 + ... + 2979485.

Almost surely, 2^31012734144 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 31012734144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46913986944).

31012734144 is an abundant number, since it is smaller than the sum of its proper divisors (62815239744).

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

31012734144 is a wasteful number, since it uses less digits than its factorization.

31012734144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12662 (or 12652 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 31012734144 in words is "thirty-one billion, twelve million, seven hundred thirty-four thousand, one hundred forty-four".