31121230034 has 16 divisors (see below), whose sum is σ = 48719994048. Its totient is φ = 14881468272.

The previous prime is 31121229989. The next prime is 31121230037. The reversal of 31121230034 is 43003212113.

It is a junction number, because it is equal to n+sod(n) for n = 31121229988 and 31121230015.

It is not an unprimeable number, because it can be changed into a prime (31121230037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221669 + ... + 333735.

It is an arithmetic number, because the mean of its divisors is an integer number (3044999628).

Almost surely, 2^31121230034 is an apocalyptic number.

31121230034 is a deficient number, since it is larger than the sum of its proper divisors (17598764014).

31121230034 is a wasteful number, since it uses less digits than its factorization.

31121230034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118129.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31121230034 its reverse (43003212113), we get a palindrome (74124442147).

The spelling of 31121230034 in words is "thirty-one billion, one hundred twenty-one million, two hundred thirty thousand, thirty-four".