40030513 has 2 divisors, whose sum is σ = 40030514. Its totient is φ = 40030512.

The previous prime is 40030493. The next prime is 40030561. The reversal of 40030513 is 31503004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29899024 + 10131489 = 5468^2 + 3183^2 .

It is a cyclic number.

It is not a de Polignac number, because 40030513 - 2⁵ = 40030481 is a prime.

It is not a weakly prime, because it can be changed into another prime (40030313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015256 + 20015257.

It is an arithmetic number, because the mean of its divisors is an integer number (20015257).

Almost surely, 2^40030513 is an apocalyptic number.

It is an amenable number.

40030513 is a deficient number, since it is larger than the sum of its proper divisors (1).

40030513 is an equidigital number, since it uses as much as digits as its factorization.

40030513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 40030513 is about 6326.9671249343. The cubic root of 40030513 is about 342.0821280595.

Adding to 40030513 its reverse (31503004), we get a palindrome (71533517).

The spelling of 40030513 in words is "forty million, thirty thousand, five hundred thirteen".