2130331381 has 2 divisors, whose sum is σ = 2130331382. Its totient is φ = 2130331380.

The previous prime is 2130331267. The next prime is 2130331391. The reversal of 2130331381 is 1831330312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1766857156 + 363474225 = 42034^2 + 19065^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130331381 - 2⁹ = 2130330869 is a prime.

It is a super-2 number, since 2×2130331381² = 9076623585746734322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130331391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065165690 + 1065165691.

It is an arithmetic number, because the mean of its divisors is an integer number (1065165691).

Almost surely, 2^2130331381 is an apocalyptic number.

It is an amenable number.

2130331381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130331381 is an equidigital number, since it uses as much as digits as its factorization.

2130331381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2130331381 is about 46155.5130076571. The cubic root of 2130331381 is about 1286.7150724613.

Adding to 2130331381 its reverse (1831330312), we get a palindrome (3961661693).

The spelling of 2130331381 in words is "two billion, one hundred thirty million, three hundred thirty-one thousand, three hundred eighty-one".