1203431897 has 2 divisors, whose sum is σ = 1203431898. Its totient is φ = 1203431896.

The previous prime is 1203431881. The next prime is 1203431903. The reversal of 1203431897 is 7981343021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1130909641 + 72522256 = 33629^2 + 8516^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203431897 - 2⁴ = 1203431881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1203431897.

It is not a weakly prime, because it can be changed into another prime (1203437897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601715948 + 601715949.

It is an arithmetic number, because the mean of its divisors is an integer number (601715949).

Almost surely, 2^1203431897 is an apocalyptic number.

It is an amenable number.

1203431897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203431897 is an equidigital number, since it uses as much as digits as its factorization.

1203431897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1203431897 is about 34690.5159517699. The cubic root of 1203431897 is about 1063.6706424128.

The spelling of 1203431897 in words is "one billion, two hundred three million, four hundred thirty-one thousand, eight hundred ninety-seven".