231213567 has 8 divisors (see below), whose sum is σ = 331999024. Its totient is φ = 142285248.

The previous prime is 231213551. The next prime is 231213571. The reversal of 231213567 is 765312132.

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

It is not a de Polignac number, because 231213567 - 2⁴ = 231213551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231213467) 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, 2964238 + ... + 2964315.

It is an arithmetic number, because the mean of its divisors is an integer number (41499878).

Almost surely, 2^231213567 is an apocalyptic number.

231213567 is a deficient number, since it is larger than the sum of its proper divisors (100785457).

231213567 is a wasteful number, since it uses less digits than its factorization.

231213567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5928569.

The product of its digits is 7560, while the sum is 30.

The square root of 231213567 is about 15205.7083688988. The cubic root of 231213567 is about 613.7682770332.

Adding to 231213567 its reverse (765312132), we get a palindrome (996525699).

The spelling of 231213567 in words is "two hundred thirty-one million, two hundred thirteen thousand, five hundred sixty-seven".