1235677313 has 4 divisors (see below), whose sum is σ = 1330729428. Its totient is φ = 1140625200.

The previous prime is 1235677279. The next prime is 1235677319. The reversal of 1235677313 is 3137765321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73753744 + 1161923569 = 8588^2 + 34087^2 .

It is not a de Polignac number, because 1235677313 - 2¹⁰ = 1235676289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235677319) 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, 47526038 + ... + 47526063.

It is an arithmetic number, because the mean of its divisors is an integer number (332682357).

Almost surely, 2^1235677313 is an apocalyptic number.

1235677313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1235677313 is a deficient number, since it is larger than the sum of its proper divisors (95052115).

1235677313 is an equidigital number, since it uses as much as digits as its factorization.

1235677313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95052114.

The product of its digits is 79380, while the sum is 38.

The square root of 1235677313 is about 35152.2021074072. The cubic root of 1235677313 is about 1073.0872242741.

The spelling of 1235677313 in words is "one billion, two hundred thirty-five million, six hundred seventy-seven thousand, three hundred thirteen".