1231623115 has 8 divisors (see below), whose sum is σ = 1483837488. Its totient is φ = 981372000.

The previous prime is 1231623097. The next prime is 1231623121. The reversal of 1231623115 is 5113261321.

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 1231623115 - 2⁵ = 1231623083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231623115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489432 + ... + 491941.

It is an arithmetic number, because the mean of its divisors is an integer number (185479686).

Almost surely, 2^1231623115 is an apocalyptic number.

1231623115 is a deficient number, since it is larger than the sum of its proper divisors (252214373).

1231623115 is an equidigital number, since it uses as much as digits as its factorization.

1231623115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981629.

The product of its digits is 1080, while the sum is 25.

The square root of 1231623115 is about 35094.4883849302. The cubic root of 1231623115 is about 1071.9123558679.

Adding to 1231623115 its reverse (5113261321), we get a palindrome (6344884436).

The spelling of 1231623115 in words is "one billion, two hundred thirty-one million, six hundred twenty-three thousand, one hundred fifteen".