31112314343 has 4 divisors (see below), whose sum is σ = 33940706568. Its totient is φ = 28283922120.

The previous prime is 31112314339. The next prime is 31112314349. The reversal of 31112314343 is 34341321113.

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 31112314343 - 2² = 31112314339 is a prime.

It is a super-2 number, since 2×31112314343² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112314349) 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, 1414196096 + ... + 1414196117.

It is an arithmetic number, because the mean of its divisors is an integer number (8485176642).

Almost surely, 2^31112314343 is an apocalyptic number.

31112314343 is a deficient number, since it is larger than the sum of its proper divisors (2828392225).

31112314343 is a wasteful number, since it uses less digits than its factorization.

31112314343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828392224.

The product of its digits is 2592, while the sum is 26.

Adding to 31112314343 its reverse (34341321113), we get a palindrome (65453635456).

The spelling of 31112314343 in words is "thirty-one billion, one hundred twelve million, three hundred fourteen thousand, three hundred forty-three".