1200231235 has 24 divisors (see below), whose sum is σ = 1763611920. Its totient is φ = 779696064.

The previous prime is 1200231217. The next prime is 1200231239. The reversal of 1200231235 is 5321320021.

It is not a de Polignac number, because 1200231235 - 2¹¹ = 1200229187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1200231239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124264 + ... + 133573.

It is an arithmetic number, because the mean of its divisors is an integer number (73483830).

Almost surely, 2^1200231235 is an apocalyptic number.

1200231235 is a deficient number, since it is larger than the sum of its proper divisors (563380685).

1200231235 is a wasteful number, since it uses less digits than its factorization.

1200231235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257875 (or 257868 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1200231235 is about 34644.3535803455. The cubic root of 1200231235 is about 1062.7268214250.

Adding to 1200231235 its reverse (5321320021), we get a palindrome (6521551256).

The spelling of 1200231235 in words is "one billion, two hundred million, two hundred thirty-one thousand, two hundred thirty-five".