10731776381 has 2 divisors, whose sum is σ = 10731776382. Its totient is φ = 10731776380.

The previous prime is 10731776359. The next prime is 10731776383. The reversal of 10731776381 is 18367713701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10385444281 + 346332100 = 101909^2 + 18610^2 .

It is a cyclic number.

It is not a de Polignac number, because 10731776381 - 2⁶ = 10731776317 is a prime.

It is a super-2 number, since 2×10731776381² (a number of 21 digits) contains 22 as substring.

Together with 10731776383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10731776383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5365888190 + 5365888191.

It is an arithmetic number, because the mean of its divisors is an integer number (5365888191).

Almost surely, 2^10731776381 is an apocalyptic number.

It is an amenable number.

10731776381 is a deficient number, since it is larger than the sum of its proper divisors (1).

10731776381 is an equidigital number, since it uses as much as digits as its factorization.

10731776381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 10731776381 in words is "ten billion, seven hundred thirty-one million, seven hundred seventy-six thousand, three hundred eighty-one".