1331342429 has 2 divisors, whose sum is σ = 1331342430. Its totient is φ = 1331342428.

The previous prime is 1331342381. The next prime is 1331342443. The reversal of 1331342429 is 9242431331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1324814404 + 6528025 = 36398^2 + 2555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331342429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331342395 and 1331342404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331342489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665671214 + 665671215.

It is an arithmetic number, because the mean of its divisors is an integer number (665671215).

Almost surely, 2^1331342429 is an apocalyptic number.

It is an amenable number.

1331342429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331342429 is an equidigital number, since it uses as much as digits as its factorization.

1331342429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 1331342429 is about 36487.5654024765. The cubic root of 1331342429 is about 1100.0943249693.

The spelling of 1331342429 in words is "one billion, three hundred thirty-one million, three hundred forty-two thousand, four hundred twenty-nine".