1306403427 has 16 divisors (see below), whose sum is σ = 2077263360. Its totient is φ = 714058752.

The previous prime is 1306403419. The next prime is 1306403431. The reversal of 1306403427 is 7243046031.

1306403427 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1306403427 - 2³ = 1306403419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1306403394 and 1306403403.

It is not an unprimeable number, because it can be changed into a prime (1306403447) 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, 1351902 + ... + 1352867.

It is an arithmetic number, because the mean of its divisors is an integer number (129828960).

Almost surely, 2^1306403427 is an apocalyptic number.

1306403427 is a deficient number, since it is larger than the sum of its proper divisors (770859933).

1306403427 is a wasteful number, since it uses less digits than its factorization.

1306403427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704802.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 1306403427 is about 36144.2032281803. The cubic root of 1306403427 is about 1093.1819115868.

Adding to 1306403427 its reverse (7243046031), we get a palindrome (8549449458).

The spelling of 1306403427 in words is "one billion, three hundred six million, four hundred three thousand, four hundred twenty-seven".