22291681031 has 2 divisors, whose sum is σ = 22291681032. Its totient is φ = 22291681030.

The previous prime is 22291681003. The next prime is 22291681033. The reversal of 22291681031 is 13018619222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22291681031 is a prime.

It is a super-2 number, since 2×22291681031² (a number of 21 digits) contains 22 as substring.

Together with 22291681033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22291680982 and 22291681000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22291681033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11145840515 + 11145840516.

It is an arithmetic number, because the mean of its divisors is an integer number (11145840516).

Almost surely, 2^22291681031 is an apocalyptic number.

22291681031 is a deficient number, since it is larger than the sum of its proper divisors (1).

22291681031 is an equidigital number, since it uses as much as digits as its factorization.

22291681031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 22291681031 in words is "twenty-two billion, two hundred ninety-one million, six hundred eighty-one thousand, thirty-one".