313123344202 has 4 divisors (see below), whose sum is σ = 469685016306. Its totient is φ = 156561672100.

The previous prime is 313123344139. The next prime is 313123344221. The reversal of 313123344202 is 202443321313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202443321313 = 27983 ⋅7234511.

It can be written as a sum of positive squares in only one way, i.e., 284653193841 + 28470150361 = 533529^2 + 168731^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78280836049 + ... + 78280836052.

Almost surely, 2^313123344202 is an apocalyptic number.

313123344202 is a deficient number, since it is larger than the sum of its proper divisors (156561672104).

313123344202 is a wasteful number, since it uses less digits than its factorization.

313123344202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156561672103.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 313123344202 its reverse (202443321313), we get a palindrome (515566665515).

The spelling of 313123344202 in words is "three hundred thirteen billion, one hundred twenty-three million, three hundred forty-four thousand, two hundred two".