1031320343 has 2 divisors, whose sum is σ = 1031320344. Its totient is φ = 1031320342.

The previous prime is 1031320333. The next prime is 1031320349. The reversal of 1031320343 is 3430231301.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031320343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031320349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515660171 + 515660172.

It is an arithmetic number, because the mean of its divisors is an integer number (515660172).

Almost surely, 2^1031320343 is an apocalyptic number.

1031320343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031320343 is an equidigital number, since it uses as much as digits as its factorization.

1031320343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1031320343 is about 32114.1766670111. The cubic root of 1031320343 is about 1010.3329761845.

Adding to 1031320343 its reverse (3430231301), we get a palindrome (4461551644).

The spelling of 1031320343 in words is "one billion, thirty-one million, three hundred twenty thousand, three hundred forty-three".