31830180315156 has 30 divisors (see below), whose sum is σ = 83210378787690. Its totient is φ = 10610060104944.

The previous prime is 31830180315151. The next prime is 31830180315217. The reversal of 31830180315156 is 65151308103813.

31830180315156 is a `hidden beast` number, since 3 + 1 + 8 + 3 + 0 + 180 + 315 + 156 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19161805856400 + 12668374458756 = 4377420^2 + 3559266^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31830180315151) 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 9 ways as a sum of consecutive naturals, for example, 49120648311 + ... + 49120648958.

It is an arithmetic number, because the mean of its divisors is an integer number (2773679292923).

Almost surely, 2^{31830180315156} is an apocalyptic number.

31830180315156 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31830180315156 is an abundant number, since it is smaller than the sum of its proper divisors (51380198472534).

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

31830180315156 is a wasteful number, since it uses less digits than its factorization.

31830180315156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98241297285 (or 98241297274 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

Adding to 31830180315156 its reverse (65151308103813), we get a palindrome (96981488418969).

The spelling of 31830180315156 in words is "thirty-one trillion, eight hundred thirty billion, one hundred eighty million, three hundred fifteen thousand, one hundred fifty-six".