1236315401 has 4 divisors (see below), whose sum is σ = 1262620032. Its totient is φ = 1210010772.

The previous prime is 1236315383. The next prime is 1236315407. The reversal of 1236315401 is 1045136321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1045136321 = 47 ⋅22236943.

It is a cyclic number.

It is not a de Polignac number, because 1236315401 - 2⁶ = 1236315337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1236315407) 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 3 ways as a sum of consecutive naturals, for example, 13152245 + ... + 13152338.

It is an arithmetic number, because the mean of its divisors is an integer number (315655008).

Almost surely, 2^1236315401 is an apocalyptic number.

It is an amenable number.

1236315401 is a deficient number, since it is larger than the sum of its proper divisors (26304631).

1236315401 is an equidigital number, since it uses as much as digits as its factorization.

1236315401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26304630.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1236315401 is about 35161.2770103704. The cubic root of 1236315401 is about 1073.2719020069.

The spelling of 1236315401 in words is "one billion, two hundred thirty-six million, three hundred fifteen thousand, four hundred one".