1231032211 has 8 divisors (see below), whose sum is σ = 1296146880. Its totient is φ = 1165949928.

The previous prime is 1231032193. The next prime is 1231032259. The reversal of 1231032211 is 1122301321.

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-1231032211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231032311) 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 7 ways as a sum of consecutive naturals, for example, 134400 + ... + 143266.

It is an arithmetic number, because the mean of its divisors is an integer number (162018360).

Almost surely, 2^1231032211 is an apocalyptic number.

1231032211 is a deficient number, since it is larger than the sum of its proper divisors (65114669).

1231032211 is an equidigital number, since it uses as much as digits as its factorization.

1231032211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16193.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1231032211 is about 35086.0686170451. The cubic root of 1231032211 is about 1071.7409022756.

Adding to 1231032211 its reverse (1122301321), we get a palindrome (2353333532).

It can be divided in two parts, 12310 and 32211, that added together give a square (44521 = 211²).

The spelling of 1231032211 in words is "one billion, two hundred thirty-one million, thirty-two thousand, two hundred eleven".