1201134231 has 16 divisors (see below), whose sum is σ = 1941227520. Its totient is φ = 727959960.

The previous prime is 1201134223. The next prime is 1201134241. The reversal of 1201134231 is 1324311021.

It is not a de Polignac number, because 1201134231 - 2³ = 1201134223 is a prime.

It is a super-2 number, since 2×1201134231² = 2885446881759922722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201134241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2021815 + ... + 2022408.

It is an arithmetic number, because the mean of its divisors is an integer number (121326720).

Almost surely, 2^1201134231 is an apocalyptic number.

1201134231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201134231 is a deficient number, since it is larger than the sum of its proper divisors (740093289).

1201134231 is a wasteful number, since it uses less digits than its factorization.

1201134231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044243 (or 4044237 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1201134231 is about 34657.3834990468. The cubic root of 1201134231 is about 1062.9932693893.

Adding to 1201134231 its reverse (1324311021), we get a palindrome (2525445252).

The spelling of 1201134231 in words is "one billion, two hundred one million, one hundred thirty-four thousand, two hundred thirty-one".