40697323 has 2 divisors, whose sum is σ = 40697324. Its totient is φ = 40697322.

The previous prime is 40697273. The next prime is 40697333. The reversal of 40697323 is 32379604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40697323 is a prime.

It is not a weakly prime, because it can be changed into another prime (40697333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20348661 + 20348662.

It is an arithmetic number, because the mean of its divisors is an integer number (20348662).

Almost surely, 2^40697323 is an apocalyptic number.

40697323 is a deficient number, since it is larger than the sum of its proper divisors (1).

40697323 is an equidigital number, since it uses as much as digits as its factorization.

40697323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 40697323 is about 6379.4453520663. The cubic root of 40697323 is about 343.9710939971.

The spelling of 40697323 in words is "forty million, six hundred ninety-seven thousand, three hundred twenty-three".