1151343213 has 4 divisors (see below), whose sum is σ = 1535124288. Its totient is φ = 767562140.

The previous prime is 1151343197. The next prime is 1151343217. The reversal of 1151343213 is 3123431511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3123431511 = 3 ⋅1041143837.

It is a cyclic number.

It is not a de Polignac number, because 1151343213 - 2⁴ = 1151343197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151343217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191890533 + ... + 191890538.

It is an arithmetic number, because the mean of its divisors is an integer number (383781072).

Almost surely, 2^1151343213 is an apocalyptic number.

It is an amenable number.

1151343213 is a deficient number, since it is larger than the sum of its proper divisors (383781075).

1151343213 is an equidigital number, since it uses as much as digits as its factorization.

1151343213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383781074.

The product of its digits is 1080, while the sum is 24.

The square root of 1151343213 is about 33931.4487312287. The cubic root of 1151343213 is about 1048.0972988761.

Adding to 1151343213 its reverse (3123431511), we get a palindrome (4274774724).

The spelling of 1151343213 in words is "one billion, one hundred fifty-one million, three hundred forty-three thousand, two hundred thirteen".