43472731 has 2 divisors, whose sum is σ = 43472732. Its totient is φ = 43472730.

The previous prime is 43472729. The next prime is 43472753. The reversal of 43472731 is 13727434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43472731 - 2¹ = 43472729 is a prime.

It is a super-2 number, since 2×43472731² = 3779756681196722, which contains 22 as substring.

Together with 43472729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 43472693 and 43472702.

It is not a weakly prime, because it can be changed into another prime (43472701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21736365 + 21736366.

It is an arithmetic number, because the mean of its divisors is an integer number (21736366).

Almost surely, 2^43472731 is an apocalyptic number.

43472731 is a deficient number, since it is larger than the sum of its proper divisors (1).

43472731 is an equidigital number, since it uses as much as digits as its factorization.

43472731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 31.

The square root of 43472731 is about 6593.3853975026. The cubic root of 43472731 is about 351.6189785318.

The spelling of 43472731 in words is "forty-three million, four hundred seventy-two thousand, seven hundred thirty-one".