231377045 has 4 divisors (see below), whose sum is σ = 277652460. Its totient is φ = 185101632.

The previous prime is 231376979. The next prime is 231377057. The reversal of 231377045 is 540773132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160934596 + 70442449 = 12686^2 + 8393^2 .

It is a cyclic number.

It is not a de Polignac number, because 231377045 - 2¹² = 231372949 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 23137700 + ... + 23137709.

It is an arithmetic number, because the mean of its divisors is an integer number (69413115).

Almost surely, 2^231377045 is an apocalyptic number.

It is an amenable number.

231377045 is a deficient number, since it is larger than the sum of its proper divisors (46275415).

231377045 is an equidigital number, since it uses as much as digits as its factorization.

231377045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46275414.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 231377045 is about 15211.0829660481. The cubic root of 231377045 is about 613.9128965342.

The spelling of 231377045 in words is "two hundred thirty-one million, three hundred seventy-seven thousand, forty-five".