43928631 has 6 divisors (see below), whose sum is σ = 63452480. Its totient is φ = 29285748.

The previous prime is 43928609. The next prime is 43928683. The reversal of 43928631 is 13682934.

It is not a de Polignac number, because 43928631 - 2¹⁰ = 43927607 is a prime.

It is a super-2 number, since 2×43928631² = 3859449243068322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43920631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2440471 + ... + 2440488.

Almost surely, 2^43928631 is an apocalyptic number.

43928631 is a deficient number, since it is larger than the sum of its proper divisors (19523849).

43928631 is a wasteful number, since it uses less digits than its factorization.

43928631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880965 (or 4880962 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 43928631 is about 6627.8677566771. The cubic root of 43928631 is about 352.8438533961.

The spelling of 43928631 in words is "forty-three million, nine hundred twenty-eight thousand, six hundred thirty-one".