31012022112 has 48 divisors (see below), whose sum is σ = 81462269952. Its totient is φ = 10330266240.

The previous prime is 31012022099. The next prime is 31012022161. The reversal of 31012022112 is 21122021013.

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

It is a super-4 number, since 4×31012022112⁴ (a number of 43 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31012022091 and 31012022100.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31413 + ... + 251019.

It is an arithmetic number, because the mean of its divisors is an integer number (1697130624).

Almost surely, 2^31012022112 is an apocalyptic number.

31012022112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31012022112 is an abundant number, since it is smaller than the sum of its proper divisors (50450247840).

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

31012022112 is a wasteful number, since it uses less digits than its factorization.

31012022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221091 (or 221083 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 31012022112 its reverse (21122021013), we get a palindrome (52134043125).

The spelling of 31012022112 in words is "thirty-one billion, twelve million, twenty-two thousand, one hundred twelve".