1313235777 has 16 divisors (see below), whose sum is σ = 2002396032. Its totient is φ = 749942400.

The previous prime is 1313235773. The next prime is 1313235793. The reversal of 1313235777 is 7775323131.

It is not a de Polignac number, because 1313235777 - 2² = 1313235773 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313235773) 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 15 ways as a sum of consecutive naturals, for example, 15277 + ... + 53477.

It is an arithmetic number, because the mean of its divisors is an integer number (125149752).

Almost surely, 2^1313235777 is an apocalyptic number.

It is an amenable number.

1313235777 is a deficient number, since it is larger than the sum of its proper divisors (689160255).

1313235777 is a wasteful number, since it uses less digits than its factorization.

1313235777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39848.

The product of its digits is 92610, while the sum is 39.

The square root of 1313235777 is about 36238.5951300544. The cubic root of 1313235777 is about 1095.0843403688.

The spelling of 1313235777 in words is "one billion, three hundred thirteen million, two hundred thirty-five thousand, seven hundred seventy-seven".