31312030220130 has 64 divisors (see below), whose sum is σ = 81982824192000. Its totient is φ = 7590588169920.

The previous prime is 31312030220111. The next prime is 31312030220131. The reversal of 31312030220130 is 3102203021313.

It is a junction number, because it is equal to n+sod(n) for n = 31312030220097 and 31312030220106.

It is not an unprimeable number, because it can be changed into a prime (31312030220131) 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, 11000301 + ... + 13551039.

It is an arithmetic number, because the mean of its divisors is an integer number (1280981628000).

Almost surely, 2^{31312030220130} is an apocalyptic number.

31312030220130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31312030220130 is an abundant number, since it is smaller than the sum of its proper divisors (50670793971870).

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

31312030220130 is a wasteful number, since it uses less digits than its factorization.

31312030220130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587959.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31312030220130 its reverse (3102203021313), we get a palindrome (34414233241443).

The spelling of 31312030220130 in words is "thirty-one trillion, three hundred twelve billion, thirty million, two hundred twenty thousand, one hundred thirty".