43131097 has 2 divisors, whose sum is σ = 43131098. Its totient is φ = 43131096.

The previous prime is 43131089. The next prime is 43131103. The reversal of 43131097 is 79013134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27258841 + 15872256 = 5221^2 + 3984^2 .

It is a cyclic number.

It is not a de Polignac number, because 43131097 - 2³ = 43131089 is a prime.

It is not a weakly prime, because it can be changed into another prime (43131037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21565548 + 21565549.

It is an arithmetic number, because the mean of its divisors is an integer number (21565549).

Almost surely, 2^43131097 is an apocalyptic number.

It is an amenable number.

43131097 is a deficient number, since it is larger than the sum of its proper divisors (1).

43131097 is an equidigital number, since it uses as much as digits as its factorization.

43131097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 43131097 is about 6567.4269695216. The cubic root of 43131097 is about 350.6954796925.

The spelling of 43131097 in words is "forty-three million, one hundred thirty-one thousand, ninety-seven".