1231322241 has 16 divisors (see below), whose sum is σ = 1660095360. Its totient is φ = 811749120.

The previous prime is 1231322233. The next prime is 1231322249. The reversal of 1231322241 is 1422231321.

It is an interprime number because it is at equal distance from previous prime (1231322233) and next prime (1231322249).

It is not a de Polignac number, because 1231322241 - 2³ = 1231322233 is a prime.

It is a super-2 number, since 2×1231322241² = 3032308922362524162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231322249) 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 15 ways as a sum of consecutive naturals, for example, 152340 + ... + 160218.

It is an arithmetic number, because the mean of its divisors is an integer number (103755960).

Almost surely, 2^1231322241 is an apocalyptic number.

It is an amenable number.

1231322241 is a deficient number, since it is larger than the sum of its proper divisors (428773119).

1231322241 is a wasteful number, since it uses less digits than its factorization.

1231322241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8456.

The product of its digits is 576, while the sum is 21.

The square root of 1231322241 is about 35090.2014955742. The cubic root of 1231322241 is about 1071.8250627071.

Adding to 1231322241 its reverse (1422231321), we get a palindrome (2653553562).

The spelling of 1231322241 in words is "one billion, two hundred thirty-one million, three hundred twenty-two thousand, two hundred forty-one".