40310919 has 16 divisors (see below), whose sum is σ = 65149440. Its totient is φ = 24430680.

The previous prime is 40310891. The next prime is 40310939. The reversal of 40310919 is 91901304.

It is not a de Polignac number, because 40310919 - 2⁸ = 40310663 is a prime.

It is a super-2 number, since 2×40310919² = 3249940381249122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40310892 and 40310901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40310939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67567 + ... + 68160.

It is an arithmetic number, because the mean of its divisors is an integer number (4071840).

Almost surely, 2^40310919 is an apocalyptic number.

40310919 is a deficient number, since it is larger than the sum of its proper divisors (24838521).

40310919 is a wasteful number, since it uses less digits than its factorization.

40310919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135747 (or 135741 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 40310919 is about 6349.0880447510. The cubic root of 40310919 is about 342.8790099892.

The spelling of 40310919 in words is "forty million, three hundred ten thousand, nine hundred nineteen".