40611013 has 2 divisors, whose sum is σ = 40611014. Its totient is φ = 40611012.

The previous prime is 40611001. The next prime is 40611017. The reversal of 40611013 is 31011604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39917124 + 693889 = 6318^2 + 833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40611013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40611017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20305506 + 20305507.

It is an arithmetic number, because the mean of its divisors is an integer number (20305507).

Almost surely, 2^40611013 is an apocalyptic number.

It is an amenable number.

40611013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40611013 is an equidigital number, since it uses as much as digits as its factorization.

40611013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 40611013 is about 6372.6770669790. The cubic root of 40611013 is about 343.7277597512.

Adding to 40611013 its reverse (31011604), we get a palindrome (71622617).

The spelling of 40611013 in words is "forty million, six hundred eleven thousand, thirteen".