312742205 has 4 divisors (see below), whose sum is σ = 375290652. Its totient is φ = 250193760.

The previous prime is 312742193. The next prime is 312742207. The reversal of 312742205 is 502247213.

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 143664196 + 169078009 = 11986^2 + 13003^2 .

It is not a de Polignac number, because 312742205 - 2²⁸ = 44306749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312742207) 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, 31274216 + ... + 31274225.

It is an arithmetic number, because the mean of its divisors is an integer number (93822663).

Almost surely, 2^312742205 is an apocalyptic number.

It is an amenable number.

312742205 is a deficient number, since it is larger than the sum of its proper divisors (62548447).

312742205 is an equidigital number, since it uses as much as digits as its factorization.

312742205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62548446.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 312742205 is about 17684.5187946972. The cubic root of 312742205 is about 678.7796776793.

Adding to 312742205 its reverse (502247213), we get a palindrome (814989418).

The spelling of 312742205 in words is "three hundred twelve million, seven hundred forty-two thousand, two hundred five".