312342101242 has 4 divisors (see below), whose sum is σ = 468513151866. Its totient is φ = 156171050620.

The previous prime is 312342101177. The next prime is 312342101249. The reversal of 312342101242 is 242101243213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242101243213 = 31 ⋅7809717523.

It can be written as a sum of positive squares in only one way, i.e., 308434726161 + 3907375081 = 555369^2 + 62509^2 .

It is not an unprimeable number, because it can be changed into a prime (312342101249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78085525309 + ... + 78085525312.

Almost surely, 2^312342101242 is an apocalyptic number.

312342101242 is a deficient number, since it is larger than the sum of its proper divisors (156171050624).

312342101242 is a wasteful number, since it uses less digits than its factorization.

312342101242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156171050623.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 312342101242 its reverse (242101243213), we get a palindrome (554443344455).

The spelling of 312342101242 in words is "three hundred twelve billion, three hundred forty-two million, one hundred one thousand, two hundred forty-two".