231897953 has 8 divisors (see below), whose sum is σ = 270665472. Its totient is φ = 194540256.

The previous prime is 231897947. The next prime is 231897961. The reversal of 231897953 is 359798132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231897953 - 2⁶ = 231897889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a junction number, because it is equal to n+sod(n) for n = 231897898 and 231897907.

It is not an unprimeable number, because it can be changed into a prime (231897973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352100 + ... + 352757.

It is an arithmetic number, because the mean of its divisors is an integer number (33833184).

Almost surely, 2^231897953 is an apocalyptic number.

It is an amenable number.

231897953 is a deficient number, since it is larger than the sum of its proper divisors (38767519).

231897953 is an equidigital number, since it uses as much as digits as its factorization.

231897953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704911.

The product of its digits is 408240, while the sum is 47.

The square root of 231897953 is about 15228.1959863931. The cubic root of 231897953 is about 614.3732597652.

The spelling of 231897953 in words is "two hundred thirty-one million, eight hundred ninety-seven thousand, nine hundred fifty-three".