313402289 has 2 divisors, whose sum is σ = 313402290. Its totient is φ = 313402288.

The previous prime is 313402261. The next prime is 313402339. The reversal of 313402289 is 982204313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224760064 + 88642225 = 14992^2 + 9415^2 .

It is a cyclic number.

It is not a de Polignac number, because 313402289 - 2¹⁶ = 313336753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313402489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156701144 + 156701145.

It is an arithmetic number, because the mean of its divisors is an integer number (156701145).

Almost surely, 2^313402289 is an apocalyptic number.

It is an amenable number.

313402289 is a deficient number, since it is larger than the sum of its proper divisors (1).

313402289 is an equidigital number, since it uses as much as digits as its factorization.

313402289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 313402289 is about 17703.1717214741. The cubic root of 313402289 is about 679.2568936765.

The spelling of 313402289 in words is "three hundred thirteen million, four hundred two thousand, two hundred eighty-nine".