313228501 has 2 divisors, whose sum is σ = 313228502. Its totient is φ = 313228500.

The previous prime is 313228493. The next prime is 313228523. The reversal of 313228501 is 105822313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231344100 + 81884401 = 15210^2 + 9049^2 .

It is a cyclic number.

It is not a de Polignac number, because 313228501 - 2³ = 313228493 is a prime.

It is a super-2 number, since 2×313228501² = 196224187677414002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313228541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156614250 + 156614251.

It is an arithmetic number, because the mean of its divisors is an integer number (156614251).

Almost surely, 2^313228501 is an apocalyptic number.

It is an amenable number.

313228501 is a deficient number, since it is larger than the sum of its proper divisors (1).

313228501 is an equidigital number, since it uses as much as digits as its factorization.

313228501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 313228501 is about 17698.2626548484. The cubic root of 313228501 is about 679.1313165002.

The spelling of 313228501 in words is "three hundred thirteen million, two hundred twenty-eight thousand, five hundred one".