22006535731 has 2 divisors, whose sum is σ = 22006535732. Its totient is φ = 22006535730.

The previous prime is 22006535713. The next prime is 22006535753. The reversal of 22006535731 is 13753560022.

Together with previous prime (22006535713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22006535731 - 2¹³ = 22006527539 is a prime.

It is a super-2 number, since 2×22006535731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22006535701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11003267865 + 11003267866.

It is an arithmetic number, because the mean of its divisors is an integer number (11003267866).

Almost surely, 2^22006535731 is an apocalyptic number.

22006535731 is a deficient number, since it is larger than the sum of its proper divisors (1).

22006535731 is an equidigital number, since it uses as much as digits as its factorization.

22006535731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 34.

The spelling of 22006535731 in words is "twenty-two billion, six million, five hundred thirty-five thousand, seven hundred thirty-one".