31001302113020 has 12 divisors (see below), whose sum is σ = 65102734437384. Its totient is φ = 12400520845200.

The previous prime is 31001302113011. The next prime is 31001302113037. The reversal of 31001302113020 is 2031120310013.

It is a super-2 number, since 2×31001302113020² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31001302113020.

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 3 ways as a sum of consecutive naturals, for example, 775032552806 + ... + 775032552845.

It is an arithmetic number, because the mean of its divisors is an integer number (5425227869782).

Almost surely, 2^{31001302113020} is an apocalyptic number.

It is an amenable number.

31001302113020 is an abundant number, since it is smaller than the sum of its proper divisors (34101432324364).

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

31001302113020 is a wasteful number, since it uses less digits than its factorization.

31001302113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550065105660 (or 1550065105658 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31001302113020 its reverse (2031120310013), we get a palindrome (33032422423033).

The spelling of 31001302113020 in words is "thirty-one trillion, one billion, three hundred two million, one hundred thirteen thousand, twenty".