1431313361 has 2 divisors, whose sum is σ = 1431313362. Its totient is φ = 1431313360.

The previous prime is 1431313349. The next prime is 1431313363. The reversal of 1431313361 is 1633131341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1249198336 + 182115025 = 35344^2 + 13495^2 .

It is an emirp because it is prime and its reverse (1633131341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431313361 is a prime.

Together with 1431313363, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1431313361.

It is not a weakly prime, because it can be changed into another prime (1431313363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715656680 + 715656681.

It is an arithmetic number, because the mean of its divisors is an integer number (715656681).

Almost surely, 2^1431313361 is an apocalyptic number.

It is an amenable number.

1431313361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431313361 is an equidigital number, since it uses as much as digits as its factorization.

1431313361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 1431313361 is about 37832.7022693331. The cubic root of 1431313361 is about 1126.9679755711.

The spelling of 1431313361 in words is "one billion, four hundred thirty-one million, three hundred thirteen thousand, three hundred sixty-one".