31310030112 has 48 divisors (see below), whose sum is σ = 82223168832. Its totient is φ = 10432316160.

The previous prime is 31310030107. The next prime is 31310030113. The reversal of 31310030112 is 21103001313.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×31310030112² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31310030091 and 31310030100.

It is not an unprimeable number, because it can be changed into a prime (31310030113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167037 + ... + 300867.

It is an arithmetic number, because the mean of its divisors is an integer number (1712982684).

Almost surely, 2^31310030112 is an apocalyptic number.

31310030112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31310030112 is an abundant number, since it is smaller than the sum of its proper divisors (50913138720).

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

31310030112 is a wasteful number, since it uses less digits than its factorization.

31310030112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136281 (or 136273 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31310030112 its reverse (21103001313), we get a palindrome (52413031425).

The spelling of 31310030112 in words is "thirty-one billion, three hundred ten million, thirty thousand, one hundred twelve".