31033231301020 has 72 divisors (see below), whose sum is σ = 70640262647136. Its totient is φ = 11446766053632.

The previous prime is 31033231301011. The next prime is 31033231301069. The reversal of 31033231301020 is 2010313233013.

It is a super-2 number, since 2×31033231301020² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31033231300982 and 31033231301000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1347567 + ... + 7992646.

It is an arithmetic number, because the mean of its divisors is an integer number (981114758988).

Almost surely, 2^{31033231301020} is an apocalyptic number.

It is an amenable number.

31033231301020 is an abundant number, since it is smaller than the sum of its proper divisors (39607031346116).

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

31033231301020 is a wasteful number, since it uses less digits than its factorization.

31033231301020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9341231 (or 9341216 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31033231301020 its reverse (2010313233013), we get a palindrome (33043544534033).

The spelling of 31033231301020 in words is "thirty-one trillion, thirty-three billion, two hundred thirty-one million, three hundred one thousand, twenty".