31353025140 has 144 divisors (see below), whose sum is σ = 95800985280. Its totient is φ = 8299791360.

The previous prime is 31353025097. The next prime is 31353025141. The reversal of 31353025140 is 4152035313.

31353025140 is a `hidden beast` number, since 313 + 5 + 302 + 5 + 1 + 40 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31353025141) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 16440067 + ... + 16441973.

It is an arithmetic number, because the mean of its divisors is an integer number (665284620).

Almost surely, 2^31353025140 is an apocalyptic number.

31353025140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31353025140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47900492640).

31353025140 is an abundant number, since it is smaller than the sum of its proper divisors (64447960140).

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

31353025140 is a wasteful number, since it uses less digits than its factorization.

31353025140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542 (or 2537 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The spelling of 31353025140 in words is "thirty-one billion, three hundred fifty-three million, twenty-five thousand, one hundred forty".