1152523331 has 4 divisors (see below), whose sum is σ = 1177045152. Its totient is φ = 1128001512.

The previous prime is 1152523303. The next prime is 1152523357. The reversal of 1152523331 is 1333252511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1333252511 = 24049 ⋅55439.

It is a cyclic number.

It is not a de Polignac number, because 1152523331 - 2¹⁴ = 1152506947 is a prime.

It is a super-2 number, since 2×1152523331² = 2656620056998671122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1152523331.

It is not an unprimeable number, because it can be changed into a prime (1152523391) 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, 12260840 + ... + 12260933.

It is an arithmetic number, because the mean of its divisors is an integer number (294261288).

Almost surely, 2^1152523331 is an apocalyptic number.

1152523331 is a deficient number, since it is larger than the sum of its proper divisors (24521821).

1152523331 is an equidigital number, since it uses as much as digits as its factorization.

1152523331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24521820.

The product of its digits is 2700, while the sum is 26.

The square root of 1152523331 is about 33948.8340153237. The cubic root of 1152523331 is about 1048.4552738390.

Adding to 1152523331 its reverse (1333252511), we get a palindrome (2485775842).

The spelling of 1152523331 in words is "one billion, one hundred fifty-two million, five hundred twenty-three thousand, three hundred thirty-one".