1312306401 has 16 divisors (see below), whose sum is σ = 2000304000. Its totient is φ = 749664768.

The previous prime is 1312306399. The next prime is 1312306441. The reversal of 1312306401 is 1046032131.

It is not a de Polignac number, because 1312306401 - 2¹ = 1312306399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1312306441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84145 + ... + 98513.

It is an arithmetic number, because the mean of its divisors is an integer number (125019000).

Almost surely, 2^1312306401 is an apocalyptic number.

It is an amenable number.

1312306401 is a deficient number, since it is larger than the sum of its proper divisors (687997599).

1312306401 is a wasteful number, since it uses less digits than its factorization.

1312306401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18728.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1312306401 is about 36225.7698468921. The cubic root of 1312306401 is about 1094.8259492756.

Adding to 1312306401 its reverse (1046032131), we get a palindrome (2358338532).

The spelling of 1312306401 in words is "one billion, three hundred twelve million, three hundred six thousand, four hundred one".