1303412381 has 2 divisors, whose sum is σ = 1303412382. Its totient is φ = 1303412380.

The previous prime is 1303412359. The next prime is 1303412443. The reversal of 1303412381 is 1832143031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834689881 + 468722500 = 28891^2 + 21650^2 .

It is an emirp because it is prime and its reverse (1832143031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1303412381 - 2¹⁸ = 1303150237 is a prime.

It is a super-2 number, since 2×1303412381² = 3397767669888178322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1303412381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1303412351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651706190 + 651706191.

It is an arithmetic number, because the mean of its divisors is an integer number (651706191).

Almost surely, 2^1303412381 is an apocalyptic number.

It is an amenable number.

1303412381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303412381 is an equidigital number, since it uses as much as digits as its factorization.

1303412381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1303412381 is about 36102.8029521255. The cubic root of 1303412381 is about 1092.3469842092.

The spelling of 1303412381 in words is "one billion, three hundred three million, four hundred twelve thousand, three hundred eighty-one".