40181303 has 2 divisors, whose sum is σ = 40181304. Its totient is φ = 40181302.

The previous prime is 40181291. The next prime is 40181341. The reversal of 40181303 is 30318104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40181303 - 2¹⁰ = 40180279 is a prime.

It is a super-2 number, since 2×40181303² = 3229074221555618, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2444006 and since 40181303 and 2444006 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40181003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20090651 + 20090652.

It is an arithmetic number, because the mean of its divisors is an integer number (20090652).

Almost surely, 2^40181303 is an apocalyptic number.

40181303 is a deficient number, since it is larger than the sum of its proper divisors (1).

40181303 is an equidigital number, since it uses as much as digits as its factorization.

40181303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 40181303 is about 6338.8723760618. The cubic root of 40181303 is about 342.5111169070.

Adding to 40181303 its reverse (30318104), we get a palindrome (70499407).

The spelling of 40181303 in words is "forty million, one hundred eighty-one thousand, three hundred three".