231721274 has 8 divisors (see below), whose sum is σ = 362694240. Its totient is φ = 110823196.

The previous prime is 231721253. The next prime is 231721277. The reversal of 231721274 is 472127132.

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

It is not an unprimeable number, because it can be changed into a prime (231721277) 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 3 ways as a sum of consecutive naturals, for example, 2518664 + ... + 2518755.

It is an arithmetic number, because the mean of its divisors is an integer number (45336780).

Almost surely, 2^231721274 is an apocalyptic number.

231721274 is a deficient number, since it is larger than the sum of its proper divisors (130972966).

231721274 is a wasteful number, since it uses less digits than its factorization.

231721274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5037444.

The product of its digits is 4704, while the sum is 29.

The square root of 231721274 is about 15222.3938327715. The cubic root of 231721274 is about 614.2171933718.

The spelling of 231721274 in words is "two hundred thirty-one million, seven hundred twenty-one thousand, two hundred seventy-four".