322140407 has 2 divisors, whose sum is σ = 322140408. Its totient is φ = 322140406.

The previous prime is 322140337. The next prime is 322140443. The reversal of 322140407 is 704041223.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322140407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322140107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161070203 + 161070204.

It is an arithmetic number, because the mean of its divisors is an integer number (161070204).

Almost surely, 2^322140407 is an apocalyptic number.

322140407 is a deficient number, since it is larger than the sum of its proper divisors (1).

322140407 is an equidigital number, since it uses as much as digits as its factorization.

322140407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 322140407 is about 17948.2703066340. The cubic root of 322140407 is about 685.5120096184.

The spelling of 322140407 in words is "three hundred twenty-two million, one hundred forty thousand, four hundred seven".