40354031 has 4 divisors (see below), whose sum is σ = 40422000. Its totient is φ = 40286064.

The previous prime is 40354021. The next prime is 40354091. The reversal of 40354031 is 13045304.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40354031 is a prime.

It is a super-2 number, since 2×40354031² = 3256895635897922, 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 = 40353994 and 40354012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40354021) 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, 33086 + ... + 34283.

It is an arithmetic number, because the mean of its divisors is an integer number (10105500).

Almost surely, 2^40354031 is an apocalyptic number.

40354031 is a deficient number, since it is larger than the sum of its proper divisors (67969).

40354031 is an equidigital number, since it uses as much as digits as its factorization.

40354031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67968.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40354031 is about 6352.4822707348. The cubic root of 40354031 is about 343.0012013093.

Adding to 40354031 its reverse (13045304), we get a palindrome (53399335).

The spelling of 40354031 in words is "forty million, three hundred fifty-four thousand, thirty-one".