1200131131 has 4 divisors (see below), whose sum is σ = 1229402664. Its totient is φ = 1170859600.

The previous prime is 1200131087. The next prime is 1200131159. The reversal of 1200131131 is 1311310021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200131131 - 2⁷ = 1200131003 is a prime.

It is a super-2 number, since 2×1200131131² = 2880629463190678322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200131171) 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, 14635705 + ... + 14635786.

It is an arithmetic number, because the mean of its divisors is an integer number (307350666).

Almost surely, 2^1200131131 is an apocalyptic number.

1200131131 is a deficient number, since it is larger than the sum of its proper divisors (29271533).

1200131131 is an equidigital number, since it uses as much as digits as its factorization.

1200131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29271532.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1200131131 is about 34642.9088126272. The cubic root of 1200131131 is about 1062.6972754063.

Adding to 1200131131 its reverse (1311310021), we get a palindrome (2511441152).

The spelling of 1200131131 in words is "one billion, two hundred million, one hundred thirty-one thousand, one hundred thirty-one".