31030134140 has 96 divisors (see below), whose sum is σ = 68447490048. Its totient is φ = 11803968000.

The previous prime is 31030134133. The next prime is 31030134209. The reversal of 31030134140 is 4143103013.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10442855 + ... + 10445825.

It is an arithmetic number, because the mean of its divisors is an integer number (712994688).

Almost surely, 2^31030134140 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 31030134140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34223745024).

31030134140 is an abundant number, since it is smaller than the sum of its proper divisors (37417355908).

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

31030134140 is a wasteful number, since it uses less digits than its factorization.

31030134140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3337 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31030134140 its reverse (4143103013), we get a palindrome (35173237153).

The spelling of 31030134140 in words is "thirty-one billion, thirty million, one hundred thirty-four thousand, one hundred forty".