31001221230112 has 48 divisors (see below), whose sum is σ = 71176273257600. Its totient is φ = 13286237665344.

The previous prime is 31001221230019. The next prime is 31001221230143. The reversal of 31001221230112 is 21103212210013.

It is a super-2 number, since 2×31001221230112² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31001221230112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412216668 + ... + 1412238619.

It is an arithmetic number, because the mean of its divisors is an integer number (1482839026200).

Almost surely, 2^{31001221230112} is an apocalyptic number.

31001221230112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31001221230112 is an abundant number, since it is smaller than the sum of its proper divisors (40175052027488).

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

31001221230112 is an equidigital number, since it uses as much as digits as its factorization.

31001221230112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824455318 (or 2824455296 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31001221230112 its reverse (21103212210013), we get a palindrome (52104433440125).

The spelling of 31001221230112 in words is "thirty-one trillion, one billion, two hundred twenty-one million, two hundred thirty thousand, one hundred twelve".