1231022245 has 16 divisors (see below), whose sum is σ = 1529468928. Its totient is φ = 950181120.

The previous prime is 1231022231. The next prime is 1231022263. The reversal of 1231022245 is 5422201321.

It is a happy number.

It is not a de Polignac number, because 1231022245 - 2²⁹ = 694151333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 40452 + ... + 64018.

It is an arithmetic number, because the mean of its divisors is an integer number (95591808).

Almost surely, 2^1231022245 is an apocalyptic number.

It is an amenable number.

1231022245 is a deficient number, since it is larger than the sum of its proper divisors (298446683).

1231022245 is a wasteful number, since it uses less digits than its factorization.

1231022245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23940.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1231022245 is about 35085.9265945764. The cubic root of 1231022245 is about 1071.7380101231.

Adding to 1231022245 its reverse (5422201321), we get a palindrome (6653223566).

The spelling of 1231022245 in words is "one billion, two hundred thirty-one million, twenty-two thousand, two hundred forty-five".