43057031 has 2 divisors, whose sum is σ = 43057032. Its totient is φ = 43057030.

The previous prime is 43057019. The next prime is 43057099. The reversal of 43057031 is 13075034.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43057031 is a prime.

It is a super-2 number, since 2×43057031² = 3707815837069922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43056988 and 43057006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43056031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21528515 + 21528516.

It is an arithmetic number, because the mean of its divisors is an integer number (21528516).

Almost surely, 2^43057031 is an apocalyptic number.

43057031 is a deficient number, since it is larger than the sum of its proper divisors (1).

43057031 is an equidigital number, since it uses as much as digits as its factorization.

43057031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 43057031 is about 6561.7856563591. The cubic root of 43057031 is about 350.4946231139.

The spelling of 43057031 in words is "forty-three million, fifty-seven thousand, thirty-one".