40017031 has 4 divisors (see below), whose sum is σ = 42370992. Its totient is φ = 37663072.

The previous prime is 40017011. The next prime is 40017101. The reversal of 40017031 is 13071004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40017031 - 2⁷ = 40016903 is a prime.

It is a super-2 number, since 2×40017031² = 3202725540109922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40016996 and 40017014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40017011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176955 + ... + 1176988.

It is an arithmetic number, because the mean of its divisors is an integer number (10592748).

Almost surely, 2^40017031 is an apocalyptic number.

40017031 is a deficient number, since it is larger than the sum of its proper divisors (2353961).

40017031 is a wasteful number, since it uses less digits than its factorization.

40017031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353960.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 40017031 is about 6325.9015958202. The cubic root of 40017031 is about 342.0437201155.

Adding to 40017031 its reverse (13071004), we get a palindrome (53088035).

The spelling of 40017031 in words is "forty million, seventeen thousand, thirty-one".