40312751 has 2 divisors, whose sum is σ = 40312752. Its totient is φ = 40312750.

The previous prime is 40312747. The next prime is 40312759. The reversal of 40312751 is 15721304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40312751 - 2² = 40312747 is a prime.

It is equal to p_2451560 and since 40312751 and 2451560 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40312759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156375 + 20156376.

It is an arithmetic number, because the mean of its divisors is an integer number (20156376).

Almost surely, 2^40312751 is an apocalyptic number.

40312751 is a deficient number, since it is larger than the sum of its proper divisors (1).

40312751 is an equidigital number, since it uses as much as digits as its factorization.

40312751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 40312751 is about 6349.2323158001. The cubic root of 40312751 is about 342.8842041554.

The spelling of 40312751 in words is "forty million, three hundred twelve thousand, seven hundred fifty-one".