1151511313 has 2 divisors, whose sum is σ = 1151511314. Its totient is φ = 1151511312.

The previous prime is 1151511289. The next prime is 1151511329. The reversal of 1151511313 is 3131151511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093492624 + 58018689 = 33068^2 + 7617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1151511313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1151511343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575755656 + 575755657.

It is an arithmetic number, because the mean of its divisors is an integer number (575755657).

Almost surely, 2^1151511313 is an apocalyptic number.

It is an amenable number.

1151511313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151511313 is an equidigital number, since it uses as much as digits as its factorization.

1151511313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225, while the sum is 22.

The square root of 1151511313 is about 33933.9256939129. The cubic root of 1151511313 is about 1048.1483049764.

Adding to 1151511313 its reverse (3131151511), we get a palindrome (4282662824).

The spelling of 1151511313 in words is "one billion, one hundred fifty-one million, five hundred eleven thousand, three hundred thirteen".