31302123220130 has 64 divisors (see below), whose sum is σ = 68187549911040. Its totient is φ = 10099847169024.

The previous prime is 31302123220117. The next prime is 31302123220157. The reversal of 31302123220130 is 3102232120313.

It is a junction number, because it is equal to n+sod(n) for n = 31302123220096 and 31302123220105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10689104 + ... + 13298916.

It is an arithmetic number, because the mean of its divisors is an integer number (1065430467360).

Almost surely, 2^{31302123220130} is an apocalyptic number.

31302123220130 is an abundant number, since it is smaller than the sum of its proper divisors (36885426690910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31302123220130 is a wasteful number, since it uses less digits than its factorization.

31302123220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619923.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31302123220130 its reverse (3102232120313), we get a palindrome (34404355340443).

The spelling of 31302123220130 in words is "thirty-one trillion, three hundred two billion, one hundred twenty-three million, two hundred twenty thousand, one hundred thirty".