31122122002231 has 4 divisors (see below), whose sum is σ = 33516131387032. Its totient is φ = 28728112617432.

The previous prime is 31122122002229. The next prime is 31122122002297. The reversal of 31122122002231 is 13220022122113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31122122002231 - 2¹ = 31122122002229 is a prime.

It is a super-3 number, since 3×31122122002231³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122122008231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197004692381 + ... + 1197004692406.

It is an arithmetic number, because the mean of its divisors is an integer number (8379032846758).

Almost surely, 2^{31122122002231} is an apocalyptic number.

31122122002231 is a deficient number, since it is larger than the sum of its proper divisors (2394009384801).

31122122002231 is a wasteful number, since it uses less digits than its factorization.

31122122002231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394009384800.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31122122002231 its reverse (13220022122113), we get a palindrome (44342144124344).

The spelling of 31122122002231 in words is "thirty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, two thousand, two hundred thirty-one".