1231350401 has 8 divisors (see below), whose sum is σ = 1246916160. Its totient is φ = 1215802192.

The previous prime is 1231350391. The next prime is 1231350403. The reversal of 1231350401 is 1040531321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231350401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1231350403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190460 + ... + 196818.

It is an arithmetic number, because the mean of its divisors is an integer number (155864520).

Almost surely, 2^1231350401 is an apocalyptic number.

It is an amenable number.

1231350401 is a deficient number, since it is larger than the sum of its proper divisors (15565759).

1231350401 is an equidigital number, since it uses as much as digits as its factorization.

1231350401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8775.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1231350401 is about 35090.6027448945. The cubic root of 1231350401 is about 1071.8332334260.

Adding to 1231350401 its reverse (1040531321), we get a palindrome (2271881722).

The spelling of 1231350401 in words is "one billion, two hundred thirty-one million, three hundred fifty thousand, four hundred one".