4231238897 has 4 divisors (see below), whose sum is σ = 4236713460. Its totient is φ = 4225764336.

The previous prime is 4231238857. The next prime is 4231238903. The reversal of 4231238897 is 7988321324.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 292546816 + 3938692081 = 17104^2 + 62759^2 .

It is a cyclic number.

It is not a de Polignac number, because 4231238897 - 2⁶ = 4231238833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4231238857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2736122 + ... + 2737667.

It is an arithmetic number, because the mean of its divisors is an integer number (1059178365).

Almost surely, 2^4231238897 is an apocalyptic number.

It is an amenable number.

4231238897 is a deficient number, since it is larger than the sum of its proper divisors (5474563).

4231238897 is an equidigital number, since it uses as much as digits as its factorization.

4231238897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474562.

The product of its digits is 580608, while the sum is 47.

The square root of 4231238897 is about 65047.9738116415. The cubic root of 4231238897 is about 1617.4189067558.

The spelling of 4231238897 in words is "four billion, two hundred thirty-one million, two hundred thirty-eight thousand, eight hundred ninety-seven".