231032073 has 4 divisors (see below), whose sum is σ = 308042768. Its totient is φ = 154021380.

The previous prime is 231032069. The next prime is 231032093. The reversal of 231032073 is 370230132.

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 231032073 - 2² = 231032069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231032063) 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, 38505343 + ... + 38505348.

It is an arithmetic number, because the mean of its divisors is an integer number (77010692).

Almost surely, 2^231032073 is an apocalyptic number.

It is an amenable number.

231032073 is a deficient number, since it is larger than the sum of its proper divisors (77010695).

231032073 is an equidigital number, since it uses as much as digits as its factorization.

231032073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77010694.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 231032073 is about 15199.7392411844. The cubic root of 231032073 is about 613.6076399494.

The spelling of 231032073 in words is "two hundred thirty-one million, thirty-two thousand, seventy-three".