231421773 has 8 divisors (see below), whose sum is σ = 336613536. Its totient is φ = 140255600.

The previous prime is 231421763. The next prime is 231421781. The reversal of 231421773 is 377124132.

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 231421773 - 2⁵ = 231421741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231421773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231421703) 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, 3506358 + ... + 3506423.

It is an arithmetic number, because the mean of its divisors is an integer number (42076692).

Almost surely, 2^231421773 is an apocalyptic number.

It is an amenable number.

231421773 is a deficient number, since it is larger than the sum of its proper divisors (105191763).

231421773 is a wasteful number, since it uses less digits than its factorization.

231421773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012795.

The product of its digits is 7056, while the sum is 30.

The square root of 231421773 is about 15212.5531387733. The cubic root of 231421773 is about 613.9524529313.

It can be divided in two parts, 23142177 and 3, that multiplied together give a cube (69426531 = 411³).

The spelling of 231421773 in words is "two hundred thirty-one million, four hundred twenty-one thousand, seven hundred seventy-three".