22131131331031 has 2 divisors, whose sum is σ = 22131131331032. Its totient is φ = 22131131331030.

The previous prime is 22131131331019. The next prime is 22131131331059. The reversal of 22131131331031 is 13013313113122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22131131331031 is a prime.

It is a super-2 number, since 2×22131131331031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22131131330987 and 22131131331005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131131331431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065565665515 + 11065565665516.

It is an arithmetic number, because the mean of its divisors is an integer number (11065565665516).

Almost surely, 2^{22131131331031} is an apocalyptic number.

22131131331031 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131131331031 is an equidigital number, since it uses as much as digits as its factorization.

22131131331031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 22131131331031 its reverse (13013313113122), we get a palindrome (35144444444153).

The spelling of 22131131331031 in words is "twenty-two trillion, one hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-one thousand, thirty-one".