1157511343 has 2 divisors, whose sum is σ = 1157511344. Its totient is φ = 1157511342.

The previous prime is 1157511323. The next prime is 1157511353. The reversal of 1157511343 is 3431157511.

It is a strong prime.

It is an emirp because it is prime and its reverse (3431157511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157511343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157511323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578755671 + 578755672.

It is an arithmetic number, because the mean of its divisors is an integer number (578755672).

Almost surely, 2^1157511343 is an apocalyptic number.

1157511343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157511343 is an equidigital number, since it uses as much as digits as its factorization.

1157511343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 31.

The square root of 1157511343 is about 34022.2183727046. The cubic root of 1157511343 is about 1049.9656354588.

Adding to 1157511343 its reverse (3431157511), we get a palindrome (4588668854).

The spelling of 1157511343 in words is "one billion, one hundred fifty-seven million, five hundred eleven thousand, three hundred forty-three".