313720651 has 4 divisors (see below), whose sum is σ = 323840704. Its totient is φ = 303600600.

The previous prime is 313720577. The next prime is 313720663. The reversal of 313720651 is 156027313.

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

It is a cyclic number.

It is not a de Polignac number, because 313720651 - 2¹⁵ = 313687883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313720681) 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, 5059980 + ... + 5060041.

It is an arithmetic number, because the mean of its divisors is an integer number (80960176).

Almost surely, 2^313720651 is an apocalyptic number.

313720651 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

313720651 is a deficient number, since it is larger than the sum of its proper divisors (10120053).

313720651 is a wasteful number, since it uses less digits than its factorization.

313720651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10120052.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 313720651 is about 17712.1611047325. The cubic root of 313720651 is about 679.4868179710.

Adding to 313720651 its reverse (156027313), we get a palindrome (469747964).

The spelling of 313720651 in words is "three hundred thirteen million, seven hundred twenty thousand, six hundred fifty-one".