31040034140 has 24 divisors (see below), whose sum is σ = 65615760672. Its totient is φ = 12333787200.

The previous prime is 31040034127. The next prime is 31040034163. The reversal of 31040034140 is 4143004013.

It is a happy number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5136059 + ... + 5142098.

It is an arithmetic number, because the mean of its divisors is an integer number (2733990028).

Almost surely, 2^31040034140 is an apocalyptic number.

It is an amenable number.

31040034140 is an abundant number, since it is smaller than the sum of its proper divisors (34575726532).

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

31040034140 is a wasteful number, since it uses less digits than its factorization.

31040034140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10278317 (or 10278315 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31040034140 its reverse (4143004013), we get a palindrome (35183038153).

The spelling of 31040034140 in words is "thirty-one billion, forty million, thirty-four thousand, one hundred forty".