231377073 has 4 divisors (see below), whose sum is σ = 308502768. Its totient is φ = 154251380.

The previous prime is 231377059. The next prime is 231377093. The reversal of 231377073 is 370773132.

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 a cyclic number.

It is not a de Polignac number, because 231377073 - 2⁴ = 231377057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231377093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38562843 + ... + 38562848.

It is an arithmetic number, because the mean of its divisors is an integer number (77125692).

Almost surely, 2^231377073 is an apocalyptic number.

It is an amenable number.

231377073 is a deficient number, since it is larger than the sum of its proper divisors (77125695).

231377073 is an equidigital number, since it uses as much as digits as its factorization.

231377073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77125694.

The product of its (nonzero) digits is 18522, while the sum is 33.

The square root of 231377073 is about 15211.0838864297. The cubic root of 231377073 is about 613.9129212983.

The spelling of 231377073 in words is "two hundred thirty-one million, three hundred seventy-seven thousand, seventy-three".