1200211231 has 8 divisors (see below), whose sum is σ = 1253827584. Its totient is φ = 1146714360.

The previous prime is 1200211211. The next prime is 1200211253. The reversal of 1200211231 is 1321120021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200211231 is a prime.

It is a super-2 number, since 2×1200211231² = 2881013998037070722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200211211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9015 + ... + 49816.

It is an arithmetic number, because the mean of its divisors is an integer number (156728448).

Almost surely, 2^1200211231 is an apocalyptic number.

1200211231 is a deficient number, since it is larger than the sum of its proper divisors (53616353).

1200211231 is an equidigital number, since it uses as much as digits as its factorization.

1200211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59741.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1200211231 is about 34644.0648740877. The cubic root of 1200211231 is about 1062.7209173112.

Adding to 1200211231 its reverse (1321120021), we get a palindrome (2521331252).

The spelling of 1200211231 in words is "one billion, two hundred million, two hundred eleven thousand, two hundred thirty-one".