312013105042 has 4 divisors (see below), whose sum is σ = 468019657566. Its totient is φ = 156006552520.

The previous prime is 312013105013. The next prime is 312013105097. The reversal of 312013105042 is 240501310213.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 244786468081 + 67226636961 = 494759^2 + 259281^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78003276259 + ... + 78003276262.

Almost surely, 2^312013105042 is an apocalyptic number.

312013105042 is a deficient number, since it is larger than the sum of its proper divisors (156006552524).

312013105042 is a wasteful number, since it uses less digits than its factorization.

312013105042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156006552523.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 312013105042 its reverse (240501310213), we get a palindrome (552514415255).

The spelling of 312013105042 in words is "three hundred twelve billion, thirteen million, one hundred five thousand, forty-two".