10331531381 has 2 divisors, whose sum is σ = 10331531382. Its totient is φ = 10331531380.

The previous prime is 10331531377. The next prime is 10331531453. The reversal of 10331531381 is 18313513301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9716044900 + 615486481 = 98570^2 + 24809^2 .

It is a cyclic number.

It is not a de Polignac number, because 10331531381 - 2² = 10331531377 is a prime.

It is a super-2 number, since 2×10331531381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10331531311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5165765690 + 5165765691.

It is an arithmetic number, because the mean of its divisors is an integer number (5165765691).

Almost surely, 2^10331531381 is an apocalyptic number.

It is an amenable number.

10331531381 is a deficient number, since it is larger than the sum of its proper divisors (1).

10331531381 is an equidigital number, since it uses as much as digits as its factorization.

10331531381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 10331531381 in words is "ten billion, three hundred thirty-one million, five hundred thirty-one thousand, three hundred eighty-one".