231380653 has 4 divisors (see below), whose sum is σ = 264435040. Its totient is φ = 198326268.

The previous prime is 231380627. The next prime is 231380663. The reversal of 231380653 is 356083132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 231380653 - 2¹³ = 231372461 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 (231380603) 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, 16527183 + ... + 16527196.

It is an arithmetic number, because the mean of its divisors is an integer number (66108760).

Almost surely, 2^231380653 is an apocalyptic number.

It is an amenable number.

231380653 is a deficient number, since it is larger than the sum of its proper divisors (33054387).

231380653 is an equidigital number, since it uses as much as digits as its factorization.

231380653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33054386.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 231380653 is about 15211.2015633217. The cubic root of 231380653 is about 613.9160875540.

The spelling of 231380653 in words is "two hundred thirty-one million, three hundred eighty thousand, six hundred fifty-three".