22971310381 has 2 divisors, whose sum is σ = 22971310382. Its totient is φ = 22971310380.

The previous prime is 22971310361. The next prime is 22971310387. The reversal of 22971310381 is 18301317922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22888664100 + 82646281 = 151290^2 + 9091^2 .

It is a cyclic number.

It is not a de Polignac number, because 22971310381 - 2⁷ = 22971310253 is a prime.

It is a super-2 number, since 2×22971310381² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22971310381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22971310387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11485655190 + 11485655191.

It is an arithmetic number, because the mean of its divisors is an integer number (11485655191).

Almost surely, 2^22971310381 is an apocalyptic number.

It is an amenable number.

22971310381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22971310381 is an equidigital number, since it uses as much as digits as its factorization.

22971310381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 22971310381 in words is "twenty-two billion, nine hundred seventy-one million, three hundred ten thousand, three hundred eighty-one".