31314004243 has 4 divisors (see below), whose sum is σ = 32160328720. Its totient is φ = 30467679768.

The previous prime is 31314004237. The next prime is 31314004247. The reversal of 31314004243 is 34240041313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31314004243 is a prime.

It is a super-3 number, since 3×31314004243³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31314004247) 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, 423162183 + ... + 423162256.

It is an arithmetic number, because the mean of its divisors is an integer number (8040082180).

Almost surely, 2^31314004243 is an apocalyptic number.

31314004243 is a deficient number, since it is larger than the sum of its proper divisors (846324477).

31314004243 is an equidigital number, since it uses as much as digits as its factorization.

31314004243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846324476.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31314004243 its reverse (34240041313), we get a palindrome (65554045556).

The spelling of 31314004243 in words is "thirty-one billion, three hundred fourteen million, four thousand, two hundred forty-three".