31213233112101 has 32 divisors (see below), whose sum is σ = 42406575528960. Its totient is φ = 20418093696000.

The previous prime is 31213233112099. The next prime is 31213233112123. The reversal of 31213233112101 is 10121133231213.

It is not a de Polignac number, because 31213233112101 - 2¹ = 31213233112099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213233182101) 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 31 ways as a sum of consecutive naturals, for example, 323133631 + ... + 323230211.

It is an arithmetic number, because the mean of its divisors is an integer number (1325205485280).

Almost surely, 2^{31213233112101} is an apocalyptic number.

It is an amenable number.

31213233112101 is a deficient number, since it is larger than the sum of its proper divisors (11193342416859).

31213233112101 is a wasteful number, since it uses less digits than its factorization.

31213233112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106237.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31213233112101 its reverse (10121133231213), we get a palindrome (41334366343314).

The spelling of 31213233112101 in words is "thirty-one trillion, two hundred thirteen billion, two hundred thirty-three million, one hundred twelve thousand, one hundred one".