40381333 has 2 divisors, whose sum is σ = 40381334. Its totient is φ = 40381332.

The previous prime is 40381309. The next prime is 40381357. The reversal of 40381333 is 33318304.

It is a balanced prime because it is at equal distance from previous prime (40381309) and next prime (40381357).

It can be written as a sum of positive squares in only one way, i.e., 36687249 + 3694084 = 6057^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 40381333 - 2²⁵ = 6826901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40381298 and 40381307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40381373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20190666 + 20190667.

It is an arithmetic number, because the mean of its divisors is an integer number (20190667).

Almost surely, 2^40381333 is an apocalyptic number.

It is an amenable number.

40381333 is a deficient number, since it is larger than the sum of its proper divisors (1).

40381333 is an equidigital number, since it uses as much as digits as its factorization.

40381333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 40381333 is about 6354.6308311341. The cubic root of 40381333 is about 343.0785377194.

Adding to 40381333 its reverse (33318304), we get a palindrome (73699637).

The spelling of 40381333 in words is "forty million, three hundred eighty-one thousand, three hundred thirty-three".