40321019 has 2 divisors, whose sum is σ = 40321020. Its totient is φ = 40321018.

The previous prime is 40321007. The next prime is 40321031. The reversal of 40321019 is 91012304.

It is a balanced prime because it is at equal distance from previous prime (40321007) and next prime (40321031).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40321019 is a prime.

It is a super-2 number, since 2×40321019² = 3251569146396722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40321079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160509 + 20160510.

It is an arithmetic number, because the mean of its divisors is an integer number (20160510).

Almost surely, 2^40321019 is an apocalyptic number.

40321019 is a deficient number, since it is larger than the sum of its proper divisors (1).

40321019 is an equidigital number, since it uses as much as digits as its factorization.

40321019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 40321019 is about 6349.8833847560. The cubic root of 40321019 is about 342.9076439913.

The spelling of 40321019 in words is "forty million, three hundred twenty-one thousand, nineteen".