313720634 has 8 divisors (see below), whose sum is σ = 474173568. Its totient is φ = 155662780.

The previous prime is 313720577. The next prime is 313720663. The reversal of 313720634 is 436027313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 313720597 and 313720606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598442 + ... + 598965.

It is an arithmetic number, because the mean of its divisors is an integer number (59271696).

Almost surely, 2^313720634 is an apocalyptic number.

313720634 is a deficient number, since it is larger than the sum of its proper divisors (160452934).

313720634 is a wasteful number, since it uses less digits than its factorization.

313720634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197540.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 313720634 is about 17712.1606248363. The cubic root of 313720634 is about 679.4868056975.

Adding to 313720634 its reverse (436027313), we get a palindrome (749747947).

The spelling of 313720634 in words is "three hundred thirteen million, seven hundred twenty thousand, six hundred thirty-four".