22131321031 has 2 divisors, whose sum is σ = 22131321032. Its totient is φ = 22131321030.

The previous prime is 22131321019. The next prime is 22131321041. The reversal of 22131321031 is 13012313122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22131321031 - 2¹¹ = 22131318983 is a prime.

It is a super-2 number, since 2×22131321031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131321041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065660515 + 11065660516.

It is an arithmetic number, because the mean of its divisors is an integer number (11065660516).

Almost surely, 2^22131321031 is an apocalyptic number.

22131321031 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131321031 is an equidigital number, since it uses as much as digits as its factorization.

22131321031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 22131321031 its reverse (13012313122), we get a palindrome (35143634153).

The spelling of 22131321031 in words is "twenty-two billion, one hundred thirty-one million, three hundred twenty-one thousand, thirty-one".