1231134343 has 2 divisors, whose sum is σ = 1231134344. Its totient is φ = 1231134342.

The previous prime is 1231134329. The next prime is 1231134397. The reversal of 1231134343 is 3434311321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231134343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231134143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615567171 + 615567172.

It is an arithmetic number, because the mean of its divisors is an integer number (615567172).

Almost surely, 2^1231134343 is an apocalyptic number.

1231134343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231134343 is an equidigital number, since it uses as much as digits as its factorization.

1231134343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

The square root of 1231134343 is about 35087.5240363295. The cubic root of 1231134343 is about 1071.7705402802.

Adding to 1231134343 its reverse (3434311321), we get a palindrome (4665445664).

The spelling of 1231134343 in words is "one billion, two hundred thirty-one million, one hundred thirty-four thousand, three hundred forty-three".