1152012231 has 12 divisors (see below), whose sum is σ = 1665323400. Its totient is φ = 767405520.

The previous prime is 1152012223. The next prime is 1152012233. The reversal of 1152012231 is 1322102511.

1152012231 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1152012231 - 2³ = 1152012223 is a prime.

It is a super-2 number, since 2×1152012231² = 2654264360747194722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152012233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37956 + ... + 61193.

It is an arithmetic number, because the mean of its divisors is an integer number (138776950).

Almost surely, 2^1152012231 is an apocalyptic number.

1152012231 is a deficient number, since it is larger than the sum of its proper divisors (513311169).

1152012231 is a wasteful number, since it uses less digits than its factorization.

1152012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100446 (or 100443 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1152012231 is about 33941.3056761227. The cubic root of 1152012231 is about 1048.3002676575.

Adding to 1152012231 its reverse (1322102511), we get a palindrome (2474114742).

The spelling of 1152012231 in words is "one billion, one hundred fifty-two million, twelve thousand, two hundred thirty-one".