1031543113 has 2 divisors, whose sum is σ = 1031543114. Its totient is φ = 1031543112.

The previous prime is 1031543111. The next prime is 1031543129. The reversal of 1031543113 is 3113451301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532824889 + 498718224 = 23083^2 + 22332^2 .

It is an emirp because it is prime and its reverse (3113451301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1031543113 - 2¹ = 1031543111 is a prime.

Together with 1031543111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1031543111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515771556 + 515771557.

It is an arithmetic number, because the mean of its divisors is an integer number (515771557).

Almost surely, 2^1031543113 is an apocalyptic number.

It is an amenable number.

1031543113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031543113 is an equidigital number, since it uses as much as digits as its factorization.

1031543113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1031543113 is about 32117.6448856388. The cubic root of 1031543113 is about 1010.4057164910.

Adding to 1031543113 its reverse (3113451301), we get a palindrome (4144994414).

The spelling of 1031543113 in words is "one billion, thirty-one million, five hundred forty-three thousand, one hundred thirteen".