31243343234 has 64 divisors (see below), whose sum is σ = 51689715840. Its totient is φ = 14111262720.

The previous prime is 31243343233. The next prime is 31243343237. The reversal of 31243343234 is 43234334213.

It is a super-2 number, since 2×31243343234² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31243343234.

It is not an unprimeable number, because it can be changed into a prime (31243343231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14591804 + ... + 14593944.

It is an arithmetic number, because the mean of its divisors is an integer number (807651810).

Almost surely, 2^31243343234 is an apocalyptic number.

31243343234 is a deficient number, since it is larger than the sum of its proper divisors (20446372606).

31243343234 is a wasteful number, since it uses less digits than its factorization.

31243343234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403.

The product of its digits is 62208, while the sum is 32.

Adding to 31243343234 its reverse (43234334213), we get a palindrome (74477677447).

The spelling of 31243343234 in words is "thirty-one billion, two hundred forty-three million, three hundred forty-three thousand, two hundred thirty-four".