31020120330130 has 8 divisors (see below), whose sum is σ = 55836216594252. Its totient is φ = 12408048132048.

The previous prime is 31020120330107. The next prime is 31020120330167. The reversal of 31020120330130 is 3103302102013.

It can be written as a sum of positive squares in 2 ways, for example, as 28445144893201 + 2574975436929 = 5333399^2 + 1604673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31020120330098 and 31020120330107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551006016497 + ... + 1551006016516.

Almost surely, 2^{31020120330130} is an apocalyptic number.

31020120330130 is a deficient number, since it is larger than the sum of its proper divisors (24816096264122).

31020120330130 is a wasteful number, since it uses less digits than its factorization.

31020120330130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102012033020.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31020120330130 its reverse (3103302102013), we get a palindrome (34123422432143).

The spelling of 31020120330130 in words is "thirty-one trillion, twenty billion, one hundred twenty million, three hundred thirty thousand, one hundred thirty".