1231232345 has 8 divisors (see below), whose sum is σ = 1688547264. Its totient is φ = 844273584.

The previous prime is 1231232341. The next prime is 1231232369. The reversal of 1231232345 is 5432321321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231232345 - 2² = 1231232341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231232341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17588999 + ... + 17589068.

It is an arithmetic number, because the mean of its divisors is an integer number (211068408).

Almost surely, 2^1231232345 is an apocalyptic number.

It is an amenable number.

1231232345 is a deficient number, since it is larger than the sum of its proper divisors (457314919).

1231232345 is an equidigital number, since it uses as much as digits as its factorization.

1231232345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35178079.

The product of its digits is 4320, while the sum is 26.

The square root of 1231232345 is about 35088.9205448102. The cubic root of 1231232345 is about 1071.7989782461.

Adding to 1231232345 its reverse (5432321321), we get a palindrome (6663553666).

The spelling of 1231232345 in words is "one billion, two hundred thirty-one million, two hundred thirty-two thousand, three hundred forty-five".