43032031397 has 2 divisors, whose sum is σ = 43032031398. Its totient is φ = 43032031396.

The previous prime is 43032031363. The next prime is 43032031451. The reversal of 43032031397 is 79313023034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32232457156 + 10799574241 = 179534^2 + 103921^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43032031397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43032031327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21516015698 + 21516015699.

It is an arithmetic number, because the mean of its divisors is an integer number (21516015699).

Almost surely, 2^43032031397 is an apocalyptic number.

It is an amenable number.

43032031397 is a deficient number, since it is larger than the sum of its proper divisors (1).

43032031397 is an equidigital number, since it uses as much as digits as its factorization.

43032031397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 35.

The spelling of 43032031397 in words is "forty-three billion, thirty-two million, thirty-one thousand, three hundred ninety-seven".