40831019 has 8 divisors (see below), whose sum is σ = 43200000. Its totient is φ = 38484072.

The previous prime is 40831001. The next prime is 40831027. The reversal of 40831019 is 91013804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40831019 - 2⁸ = 40830763 is a prime.

It is a super-2 number, since 2×40831019² = 3334344225156722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40831079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619 + ... + 9180.

It is an arithmetic number, because the mean of its divisors is an integer number (5400000).

Almost surely, 2^40831019 is an apocalyptic number.

40831019 is a deficient number, since it is larger than the sum of its proper divisors (2368981).

40831019 is a wasteful number, since it uses less digits than its factorization.

40831019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11017.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 40831019 is about 6389.9154141506. The cubic root of 40831019 is about 344.3473455483.

The spelling of 40831019 in words is "forty million, eight hundred thirty-one thousand, nineteen".