787313 has 4 divisors (see below), whose sum is σ = 821568. Its totient is φ = 753060.

The previous prime is 787309. The next prime is 787331. The reversal of 787313 is 313787.

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: 313787 = 179 ⋅1753.

It is a cyclic number.

It is not a de Polignac number, because 787313 - 2² = 787309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (787333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17093 + ... + 17138.

It is an arithmetic number, because the mean of its divisors is an integer number (205392).

2⁷⁸⁷³¹³ is an apocalyptic number.

It is an amenable number.

787313 is a deficient number, since it is larger than the sum of its proper divisors (34255).

787313 is a wasteful number, since it uses less digits than its factorization.

787313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34254.

The product of its digits is 3528, while the sum is 29.

The square root of 787313 is about 887.3065986456. The cubic root of 787313 is about 92.3384274610.

The spelling of 787313 in words is "seven hundred eighty-seven thousand, three hundred thirteen".