43678631 has 2 divisors, whose sum is σ = 43678632. Its totient is φ = 43678630.

The previous prime is 43678603. The next prime is 43678637. The reversal of 43678631 is 13687634.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43678631 - 2⁶ = 43678567 is a prime.

It is a super-2 number, since 2×43678631² = 3815645612068322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43678637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21839315 + 21839316.

It is an arithmetic number, because the mean of its divisors is an integer number (21839316).

Almost surely, 2^43678631 is an apocalyptic number.

43678631 is a deficient number, since it is larger than the sum of its proper divisors (1).

43678631 is an equidigital number, since it uses as much as digits as its factorization.

43678631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 43678631 is about 6608.9810863703. The cubic root of 43678631 is about 352.1732290215.

The spelling of 43678631 in words is "forty-three million, six hundred seventy-eight thousand, six hundred thirty-one".