3125303381 has 2 divisors, whose sum is σ = 3125303382. Its totient is φ = 3125303380.

The previous prime is 3125303359. The next prime is 3125303393. The reversal of 3125303381 is 1833035213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2286274225 + 839029156 = 47815^2 + 28966^2 .

It is a cyclic number.

It is not a de Polignac number, because 3125303381 - 2¹⁸ = 3125041237 is a prime.

It is a super-2 number, since 2×3125303381² = 19535042446580062322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3125303981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562651690 + 1562651691.

It is an arithmetic number, because the mean of its divisors is an integer number (1562651691).

Almost surely, 2^3125303381 is an apocalyptic number.

It is an amenable number.

3125303381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3125303381 is an equidigital number, since it uses as much as digits as its factorization.

3125303381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 3125303381 is about 55904.4128937958. The cubic root of 3125303381 is about 1462.0561791182.

Adding to 3125303381 its reverse (1833035213), we get a palindrome (4958338594).

The spelling of 3125303381 in words is "three billion, one hundred twenty-five million, three hundred three thousand, three hundred eighty-one".