40181003 has 2 divisors, whose sum is σ = 40181004. Its totient is φ = 40181002.

The previous prime is 40180999. The next prime is 40181017. The reversal of 40181003 is 30018104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40181003 - 2² = 40180999 is a prime.

It is a super-2 number, since 2×40181003² = 3229026004172018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40181093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20090501 + 20090502.

It is an arithmetic number, because the mean of its divisors is an integer number (20090502).

Almost surely, 2^40181003 is an apocalyptic number.

40181003 is a deficient number, since it is larger than the sum of its proper divisors (1).

40181003 is an equidigital number, since it uses as much as digits as its factorization.

40181003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 40181003 is about 6338.8487125029. The cubic root of 40181003 is about 342.5102644907.

Adding to 40181003 its reverse (30018104), we get a palindrome (70199107).

The spelling of 40181003 in words is "forty million, one hundred eighty-one thousand, three".