313534012021 has 4 divisors (see below), whose sum is σ = 313773901632. Its totient is φ = 313294122412.

The previous prime is 313534012019. The next prime is 313534012061. The reversal of 313534012021 is 120210435313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120210435313 = 53 ⋅2268121421.

It is a cyclic number.

It is not a de Polignac number, because 313534012021 - 2¹ = 313534012019 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 (313534012061) 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, 119942845 + ... + 119945458.

It is an arithmetic number, because the mean of its divisors is an integer number (78443475408).

Almost surely, 2^313534012021 is an apocalyptic number.

It is an amenable number.

313534012021 is a deficient number, since it is larger than the sum of its proper divisors (239889611).

313534012021 is a wasteful number, since it uses less digits than its factorization.

313534012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239889610.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 313534012021 its reverse (120210435313), we get a palindrome (433744447334).

The spelling of 313534012021 in words is "three hundred thirteen billion, five hundred thirty-four million, twelve thousand, twenty-one".