321214035409 has 2 divisors, whose sum is σ = 321214035410. Its totient is φ = 321214035408.

The previous prime is 321214035383. The next prime is 321214035419. The reversal of 321214035409 is 904530412123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315815900625 + 5398134784 = 561975^2 + 73472^2 .

It is a cyclic number.

It is not a de Polignac number, because 321214035409 - 2¹³ = 321214027217 is a prime.

It is not a weakly prime, because it can be changed into another prime (321214035419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160607017704 + 160607017705.

It is an arithmetic number, because the mean of its divisors is an integer number (160607017705).

Almost surely, 2^321214035409 is an apocalyptic number.

It is an amenable number.

321214035409 is a deficient number, since it is larger than the sum of its proper divisors (1).

321214035409 is an equidigital number, since it uses as much as digits as its factorization.

321214035409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 321214035409 in words is "three hundred twenty-one billion, two hundred fourteen million, thirty-five thousand, four hundred nine".