22131031303331 has 16 divisors (see below), whose sum is σ = 22285624128768. Its totient is φ = 21976876908000.

The previous prime is 22131031303309. The next prime is 22131031303387. The reversal of 22131031303331 is 13330313013122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22131031303331 is a prime.

It is a super-2 number, since 2×22131031303331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22131031303331.

It is not an unprimeable number, because it can be changed into a prime (22131031303301) 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, 1199439656 + ... + 1199458106.

It is an arithmetic number, because the mean of its divisors is an integer number (1392851508048).

Almost surely, 2^{22131031303331} is an apocalyptic number.

22131031303331 is a deficient number, since it is larger than the sum of its proper divisors (154592825437).

22131031303331 is a wasteful number, since it uses less digits than its factorization.

22131031303331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29882.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 22131031303331 its reverse (13330313013122), we get a palindrome (35461344316453).

The spelling of 22131031303331 in words is "twenty-two trillion, one hundred thirty-one billion, thirty-one million, three hundred three thousand, three hundred thirty-one".