1231253005 has 8 divisors (see below), whose sum is σ = 1502546400. Its totient is φ = 968307216.

The previous prime is 1231252993. The next prime is 1231253027. The reversal of 1231253005 is 5003521321.

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

It is a cyclic number.

It is not a de Polignac number, because 1231253005 - 2²¹ = 1229155853 is a prime.

It is a congruent number.

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, 2086575 + ... + 2087164.

It is an arithmetic number, because the mean of its divisors is an integer number (187818300).

Almost surely, 2^1231253005 is an apocalyptic number.

It is an amenable number.

1231253005 is a deficient number, since it is larger than the sum of its proper divisors (271293395).

1231253005 is an equidigital number, since it uses as much as digits as its factorization.

1231253005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173803.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1231253005 is about 35089.2149384964. The cubic root of 1231253005 is about 1071.8049731187.

Adding to 1231253005 its reverse (5003521321), we get a palindrome (6234774326).

The spelling of 1231253005 in words is "one billion, two hundred thirty-one million, two hundred fifty-three thousand, five".