1231101322 has 16 divisors (see below), whose sum is σ = 2034478944. Its totient is φ = 554050000.

The previous prime is 1231101307. The next prime is 1231101341. The reversal of 1231101322 is 2231011321.

It is a super-2 number, since 2×1231101322² = 3031220930060295368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231101296 and 1231101305.

It is an unprimeable number.

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, 274804 + ... + 279247.

It is an arithmetic number, because the mean of its divisors is an integer number (127154934).

Almost surely, 2^1231101322 is an apocalyptic number.

1231101322 is a deficient number, since it is larger than the sum of its proper divisors (803377622).

1231101322 is a wasteful number, since it uses less digits than its factorization.

1231101322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554165.

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

The square root of 1231101322 is about 35087.0534813056. The cubic root of 1231101322 is about 1071.7609579922.

Adding to 1231101322 its reverse (2231011321), we get a palindrome (3462112643).

Subtracting 1231101322 from its reverse (2231011321), we obtain a palindrome (999909999).

The spelling of 1231101322 in words is "one billion, two hundred thirty-one million, one hundred one thousand, three hundred twenty-two".