31112221310001 has 16 divisors (see below), whose sum is σ = 49637732005120. Its totient is φ = 19145982344400.

The previous prime is 31112221309931. The next prime is 31112221310003. The reversal of 31112221310001 is 10001312221113.

31112221310001 is a `hidden beast` number, since 311 + 1 + 22 + 21 + 310 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 31112221310001 - 2¹³ = 31112221301809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31112221310003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44319403225 + ... + 44319403926.

It is an arithmetic number, because the mean of its divisors is an integer number (3102358250320).

Almost surely, 2^{31112221310001} is an apocalyptic number.

It is an amenable number.

31112221310001 is a deficient number, since it is larger than the sum of its proper divisors (18525510695119).

31112221310001 is a wasteful number, since it uses less digits than its factorization.

31112221310001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88638807173 (or 88638807167 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 31112221310001 its reverse (10001312221113), we get a palindrome (41113533531114).

The spelling of 31112221310001 in words is "thirty-one trillion, one hundred twelve billion, two hundred twenty-one million, three hundred ten thousand, one".