1231122141 has 24 divisors (see below), whose sum is σ = 1796296320. Its totient is φ = 812471616.

The previous prime is 1231122097. The next prime is 1231122187. The reversal of 1231122141 is 1412211321.

It is not a de Polignac number, because 1231122141 - 2⁶ = 1231122077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231122041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 515436 + ... + 517818.

It is an arithmetic number, because the mean of its divisors is an integer number (74845680).

Almost surely, 2^1231122141 is an apocalyptic number.

It is an amenable number.

1231122141 is a deficient number, since it is larger than the sum of its proper divisors (565174179).

1231122141 is a wasteful number, since it uses less digits than its factorization.

1231122141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2942 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1231122141 is about 35087.3501564310. The cubic root of 1231122141 is about 1071.7669994298.

Adding to 1231122141 its reverse (1412211321), we get a palindrome (2643333462).

The spelling of 1231122141 in words is "one billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred forty-one".