1151232215 has 24 divisors (see below), whose sum is σ = 1608691392. Its totient is φ = 788598720.

The previous prime is 1151232209. The next prime is 1151232217. The reversal of 1151232215 is 5122321511.

1151232215 = 186² + 187² + ... + 1512².

It is not a de Polignac number, because 1151232215 - 2¹⁴ = 1151215831 is a prime.

It is a super-2 number, since 2×1151232215² = 2650671225707612450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151232217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323345 + ... + 326885.

It is an arithmetic number, because the mean of its divisors is an integer number (67028808).

Almost surely, 2^1151232215 is an apocalyptic number.

1151232215 is a deficient number, since it is larger than the sum of its proper divisors (457459177).

1151232215 is a wasteful number, since it uses less digits than its factorization.

1151232215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887 (or 4880 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 1151232215 is about 33929.8130705137. The cubic root of 1151232215 is about 1048.0636163503.

Adding to 1151232215 its reverse (5122321511), we get a palindrome (6273553726).

The spelling of 1151232215 in words is "one billion, one hundred fifty-one million, two hundred thirty-two thousand, two hundred fifteen".