1145431319 has 2 divisors, whose sum is σ = 1145431320. Its totient is φ = 1145431318.

The previous prime is 1145431229. The next prime is 1145431327. The reversal of 1145431319 is 9131345411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1145431319 - 2¹² = 1145427223 is a prime.

It is a super-2 number, since 2×1145431319² = 2624025813092159522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145431019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572715659 + 572715660.

It is an arithmetic number, because the mean of its divisors is an integer number (572715660).

Almost surely, 2^1145431319 is an apocalyptic number.

1145431319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145431319 is an equidigital number, since it uses as much as digits as its factorization.

1145431319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 1145431319 is about 33844.2213531350. The cubic root of 1145431319 is about 1046.3003033138.

The spelling of 1145431319 in words is "one billion, one hundred forty-five million, four hundred thirty-one thousand, three hundred nineteen".