31231323313130 has 64 divisors (see below), whose sum is σ = 59628918521088. Its totient is φ = 11753631774720.

The previous prime is 31231323313087. The next prime is 31231323313139. The reversal of 31231323313130 is 3131332313213.

It is a junction number, because it is equal to n+sod(n) for n = 31231323313093 and 31231323313102.

It is not an unprimeable number, because it can be changed into a prime (31231323313139) 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, 657581 + ... + 7930640.

It is an arithmetic number, because the mean of its divisors is an integer number (931701851892).

Almost surely, 2^{31231323313130} is an apocalyptic number.

31231323313130 is a deficient number, since it is larger than the sum of its proper divisors (28397595207958).

31231323313130 is a wasteful number, since it uses less digits than its factorization.

31231323313130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8588511.

The product of its (nonzero) digits is 8748, while the sum is 29.

Adding to 31231323313130 its reverse (3131332313213), we get a palindrome (34362655626343).

The spelling of 31231323313130 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty-three million, three hundred thirteen thousand, one hundred thirty".