31130221034 has 24 divisors (see below), whose sum is σ = 54027664320. Its totient is φ = 13405356360.

The previous prime is 31130221019. The next prime is 31130221037. The reversal of 31130221034 is 43012203113.

It is a junction number, because it is equal to n+sod(n) for n = 31130220997 and 31130221015.

It is not an unprimeable number, because it can be changed into a prime (31130221037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3380594 + ... + 3389789.

It is an arithmetic number, because the mean of its divisors is an integer number (2251152680).

Almost surely, 2^31130221034 is an apocalyptic number.

31130221034 is a deficient number, since it is larger than the sum of its proper divisors (22897443286).

31130221034 is a wasteful number, since it uses less digits than its factorization.

31130221034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770426 (or 6770415 counting only the distinct ones).

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

Adding to 31130221034 its reverse (43012203113), we get a palindrome (74142424147).

The spelling of 31130221034 in words is "thirty-one billion, one hundred thirty million, two hundred twenty-one thousand, thirty-four".