31302120132030 has 64 divisors (see below), whose sum is σ = 81955306960128. Its totient is φ = 7588331170560.

The previous prime is 31302120131963. The next prime is 31302120132043. The reversal of 31302120132030 is 3023102120313.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31302120131988 and 31302120132006.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 50520994 + ... + 51136826.

It is an arithmetic number, because the mean of its divisors is an integer number (1280551671252).

Almost surely, 2^{31302120132030} is an apocalyptic number.

31302120132030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31302120132030 is an abundant number, since it is smaller than the sum of its proper divisors (50653186828098).

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

31302120132030 is a wasteful number, since it uses less digits than its factorization.

31302120132030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769881.

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

Adding to 31302120132030 its reverse (3023102120313), we get a palindrome (34325222252343).

The spelling of 31302120132030 in words is "thirty-one trillion, three hundred two billion, one hundred twenty million, one hundred thirty-two thousand, thirty".