40513031033 has 2 divisors, whose sum is σ = 40513031034. Its totient is φ = 40513031032.

The previous prime is 40513031017. The next prime is 40513031071. The reversal of 40513031033 is 33013031504.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25994467984 + 14518563049 = 161228^2 + 120493^2 .

It is a cyclic number.

It is not a de Polignac number, because 40513031033 - 2⁴ = 40513031017 is a prime.

It is a super-3 number, since 3×40513031033³ (a number of 33 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40513031003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256515516 + 20256515517.

It is an arithmetic number, because the mean of its divisors is an integer number (20256515517).

Almost surely, 2^40513031033 is an apocalyptic number.

It is an amenable number.

40513031033 is a deficient number, since it is larger than the sum of its proper divisors (1).

40513031033 is an equidigital number, since it uses as much as digits as its factorization.

40513031033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 23.

Adding to 40513031033 its reverse (33013031504), we get a palindrome (73526062537).

The spelling of 40513031033 in words is "forty billion, five hundred thirteen million, thirty-one thousand, thirty-three".