40917131 has 2 divisors, whose sum is σ = 40917132. Its totient is φ = 40917130.

The previous prime is 40917103. The next prime is 40917133. The reversal of 40917131 is 13171904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40917131 - 2⁶ = 40917067 is a prime.

It is a super-2 number, since 2×40917131² = 3348423218542322, which contains 22 as substring.

Together with 40917133, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40917131.

It is not a weakly prime, because it can be changed into another prime (40917133) 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, 20458565 + 20458566.

It is an arithmetic number, because the mean of its divisors is an integer number (20458566).

Almost surely, 2^40917131 is an apocalyptic number.

40917131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40917131 is an equidigital number, since it uses as much as digits as its factorization.

40917131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 40917131 is about 6396.6499826081. The cubic root of 40917131 is about 344.5892500139.

The spelling of 40917131 in words is "forty million, nine hundred seventeen thousand, one hundred thirty-one".