31302120030131 has 8 divisors (see below), whose sum is σ = 33144907395600. Its totient is φ = 29459497796608.

The previous prime is 31302120030127. The next prime is 31302120030133. The reversal of 31302120030131 is 13103002120313.

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

It is a cyclic number.

It is not a de Polignac number, because 31302120030131 - 2² = 31302120030127 is a prime.

It is a super-2 number, since 2×31302120030131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31302120030133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40892606 + ... + 41651043.

It is an arithmetic number, because the mean of its divisors is an integer number (4143113424450).

Almost surely, 2^{31302120030131} is an apocalyptic number.

31302120030131 is a deficient number, since it is larger than the sum of its proper divisors (1842787365469).

31302120030131 is a wasteful number, since it uses less digits than its factorization.

31302120030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82565973.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31302120030131 its reverse (13103002120313), we get a palindrome (44405122150444).

The spelling of 31302120030131 in words is "thirty-one trillion, three hundred two billion, one hundred twenty million, thirty thousand, one hundred thirty-one".