1231100422 has 16 divisors (see below), whose sum is σ = 1902647232. Its totient is φ = 597116800.

The previous prime is 1231100333. The next prime is 1231100443. The reversal of 1231100422 is 2240011321.

It is a junction number, because it is equal to n+sod(n) for n = 1231100396 and 1231100405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47329 + ... + 68572.

It is an arithmetic number, because the mean of its divisors is an integer number (118915452).

Almost surely, 2^1231100422 is an apocalyptic number.

1231100422 is a deficient number, since it is larger than the sum of its proper divisors (671546810).

1231100422 is a wasteful number, since it uses less digits than its factorization.

1231100422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116063.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1231100422 is about 35087.0406560599. The cubic root of 1231100422 is about 1071.7606968209.

Adding to 1231100422 its reverse (2240011321), we get a palindrome (3471111743).

The spelling of 1231100422 in words is "one billion, two hundred thirty-one million, one hundred thousand, four hundred twenty-two".