313721051 has 8 divisors (see below), whose sum is σ = 359604960. Its totient is φ = 268103808.

The previous prime is 313721041. The next prime is 313721063. The reversal of 313721051 is 150127313.

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

It is not a de Polignac number, because 313721051 - 2²² = 309526747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313721041) 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 7 ways as a sum of consecutive naturals, for example, 64136 + ... + 68853.

It is an arithmetic number, because the mean of its divisors is an integer number (44950620).

Almost surely, 2^313721051 is an apocalyptic number.

313721051 is a deficient number, since it is larger than the sum of its proper divisors (45883909).

313721051 is a wasteful number, since it uses less digits than its factorization.

313721051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133333.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 313721051 is about 17712.1723964058. The cubic root of 313721051 is about 679.4871067572.

Adding to 313721051 its reverse (150127313), we get a palindrome (463848364).

It can be divided in two parts, 31372 and 1051, that added together give a palindrome (32423).

The spelling of 313721051 in words is "three hundred thirteen million, seven hundred twenty-one thousand, fifty-one".