1210231113 has 32 divisors (see below), whose sum is σ = 2039713536. Its totient is φ = 621105408.

The previous prime is 1210231109. The next prime is 1210231123. The reversal of 1210231113 is 3111320121.

It is a happy number.

It is not a de Polignac number, because 1210231113 - 2² = 1210231109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210231092 and 1210231101.

It is not an unprimeable number, because it can be changed into a prime (1210231123) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 49806 + ... + 70007.

It is an arithmetic number, because the mean of its divisors is an integer number (63741048).

Almost surely, 2^1210231113 is an apocalyptic number.

1210231113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1210231113 is a deficient number, since it is larger than the sum of its proper divisors (829482423).

1210231113 is a wasteful number, since it uses less digits than its factorization.

1210231113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119873.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1210231113 is about 34788.3761190430. The cubic root of 1210231113 is about 1065.6700766707.

Adding to 1210231113 its reverse (3111320121), we get a palindrome (4321551234).

The spelling of 1210231113 in words is "one billion, two hundred ten million, two hundred thirty-one thousand, one hundred thirteen".