231670653 has 8 divisors (see below), whose sum is σ = 317242848. Its totient is φ = 150272784.

The previous prime is 231670633. The next prime is 231670709. The reversal of 231670653 is 356076132.

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

It is not a de Polignac number, because 231670653 - 2²¹ = 229573501 is a prime.

It is a super-2 number, since 2×231670653² = 107342582922892818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231670633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043451 + ... + 1043672.

It is an arithmetic number, because the mean of its divisors is an integer number (39655356).

Almost surely, 2^231670653 is an apocalyptic number.

It is an amenable number.

231670653 is a deficient number, since it is larger than the sum of its proper divisors (85572195).

231670653 is a wasteful number, since it uses less digits than its factorization.

231670653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087163.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 231670653 is about 15220.7310271222. The cubic root of 231670653 is about 614.1724635514.

The spelling of 231670653 in words is "two hundred thirty-one million, six hundred seventy thousand, six hundred fifty-three".