1200131233 has 4 divisors (see below), whose sum is σ = 1371578560. Its totient is φ = 1028683908.

The previous prime is 1200131227. The next prime is 1200131243. The reversal of 1200131233 is 3321310021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1200131233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200131243) 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, 85723653 + ... + 85723666.

It is an arithmetic number, because the mean of its divisors is an integer number (342894640).

Almost surely, 2^1200131233 is an apocalyptic number.

It is an amenable number.

1200131233 is a deficient number, since it is larger than the sum of its proper divisors (171447327).

1200131233 is an equidigital number, since it uses as much as digits as its factorization.

1200131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171447326.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1200131233 is about 34642.9102847899. The cubic root of 1200131233 is about 1062.6973055128.

Adding to 1200131233 its reverse (3321310021), we get a palindrome (4521441254).

It can be divided in two parts, 12001 and 31233, that added together give a palindrome (43234).

The spelling of 1200131233 in words is "one billion, two hundred million, one hundred thirty-one thousand, two hundred thirty-three".