313021535431 has 4 divisors (see below), whose sum is σ = 341478038664. Its totient is φ = 284565032200.

The previous prime is 313021535429. The next prime is 313021535467. The reversal of 313021535431 is 134535120313.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 313021535431 - 2¹ = 313021535429 is a prime.

It is a super-2 number, since 2×313021535431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313021535393 and 313021535402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313021535531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14228251600 + ... + 14228251621.

It is an arithmetic number, because the mean of its divisors is an integer number (85369509666).

Almost surely, 2^313021535431 is an apocalyptic number.

313021535431 is a deficient number, since it is larger than the sum of its proper divisors (28456503233).

313021535431 is a wasteful number, since it uses less digits than its factorization.

313021535431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28456503232.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 313021535431 its reverse (134535120313), we get a palindrome (447556655744).

The spelling of 313021535431 in words is "three hundred thirteen billion, twenty-one million, five hundred thirty-five thousand, four hundred thirty-one".