40431463 has 4 divisors (see below), whose sum is σ = 40452568. Its totient is φ = 40410360.

The previous prime is 40431439. The next prime is 40431467. The reversal of 40431463 is 36413404.

It is a happy number.

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 40431463 - 2⁵ = 40431431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431467) 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, 7356 + ... + 11617.

It is an arithmetic number, because the mean of its divisors is an integer number (10113142).

Almost surely, 2^40431463 is an apocalyptic number.

40431463 is a deficient number, since it is larger than the sum of its proper divisors (21105).

40431463 is a wasteful number, since it uses less digits than its factorization.

40431463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21104.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 40431463 is about 6358.5739753501. The cubic root of 40431463 is about 343.2204466485.

Adding to 40431463 its reverse (36413404), we get a palindrome (76844867).

The spelling of 40431463 in words is "forty million, four hundred thirty-one thousand, four hundred sixty-three".