40335131 has 2 divisors, whose sum is σ = 40335132. Its totient is φ = 40335130.

The previous prime is 40335121. The next prime is 40335133. The reversal of 40335131 is 13153304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40335131 is a prime.

It is a super-2 number, since 2×40335131² = 3253845585574322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 40335133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40335133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20167565 + 20167566.

It is an arithmetic number, because the mean of its divisors is an integer number (20167566).

Almost surely, 2^40335131 is an apocalyptic number.

40335131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40335131 is an equidigital number, since it uses as much as digits as its factorization.

40335131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 40335131 is about 6350.9944890545. The cubic root of 40335131 is about 342.9476442058.

Adding to 40335131 its reverse (13153304), we get a palindrome (53488435).

The spelling of 40335131 in words is "forty million, three hundred thirty-five thousand, one hundred thirty-one".