40416431 has 8 divisors (see below), whose sum is σ = 45116544. Its totient is φ = 35887320.

The previous prime is 40416427. The next prime is 40416461. The reversal of 40416431 is 13461404.

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 40416431 - 2² = 40416427 is a prime.

It is a super-2 number, since 2×40416431² = 3266975789555522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40416397 and 40416406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40416461) 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, 42251 + ... + 43196.

It is an arithmetic number, because the mean of its divisors is an integer number (5639568).

Almost surely, 2^40416431 is an apocalyptic number.

40416431 is a deficient number, since it is larger than the sum of its proper divisors (4700113).

40416431 is a wasteful number, since it uses less digits than its factorization.

40416431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85501.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40416431 is about 6357.3918394260. The cubic root of 40416431 is about 343.1779061047.

Adding to 40416431 its reverse (13461404), we get a palindrome (53877835).

The spelling of 40416431 in words is "forty million, four hundred sixteen thousand, four hundred thirty-one".