1031243113 has 2 divisors, whose sum is σ = 1031243114. Its totient is φ = 1031243112.

The previous prime is 1031243077. The next prime is 1031243131. The reversal of 1031243113 is 3113421301.

Together with next prime (1031243131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756910144 + 274332969 = 27512^2 + 16563^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031243113 - 2¹³ = 1031234921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031243513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515621556 + 515621557.

It is an arithmetic number, because the mean of its divisors is an integer number (515621557).

Almost surely, 2^1031243113 is an apocalyptic number.

It is an amenable number.

1031243113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031243113 is an equidigital number, since it uses as much as digits as its factorization.

1031243113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1031243113 is about 32112.9742160392. The cubic root of 1031243113 is about 1010.3077560984.

Adding to 1031243113 its reverse (3113421301), we get a palindrome (4144664414).

The spelling of 1031243113 in words is "one billion, thirty-one million, two hundred forty-three thousand, one hundred thirteen".