1031123243 has 2 divisors, whose sum is σ = 1031123244. Its totient is φ = 1031123242.

The previous prime is 1031123213. The next prime is 1031123279. The reversal of 1031123243 is 3423211301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1031123243 - 2⁸ = 1031122987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031123213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515561621 + 515561622.

It is an arithmetic number, because the mean of its divisors is an integer number (515561622).

Almost surely, 2^1031123243 is an apocalyptic number.

1031123243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031123243 is an equidigital number, since it uses as much as digits as its factorization.

1031123243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1031123243 is about 32111.1077821990. The cubic root of 1031123243 is about 1010.2686090787.

Adding to 1031123243 its reverse (3423211301), we get a palindrome (4454334544).

The spelling of 1031123243 in words is "one billion, thirty-one million, one hundred twenty-three thousand, two hundred forty-three".