321381007 has 2 divisors, whose sum is σ = 321381008. Its totient is φ = 321381006.

The previous prime is 321380981. The next prime is 321381013. The reversal of 321381007 is 700183123.

It is a strong prime.

It is an emirp because it is prime and its reverse (700183123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321381007 - 2¹⁵ = 321348239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321381017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160690503 + 160690504.

It is an arithmetic number, because the mean of its divisors is an integer number (160690504).

Almost surely, 2^321381007 is an apocalyptic number.

321381007 is a deficient number, since it is larger than the sum of its proper divisors (1).

321381007 is an equidigital number, since it uses as much as digits as its factorization.

321381007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 321381007 is about 17927.1025824030. The cubic root of 321381007 is about 684.9729202359.

The spelling of 321381007 in words is "three hundred twenty-one million, three hundred eighty-one thousand, seven".