31001201012020 has 24 divisors (see below), whose sum is σ = 65130331929768. Its totient is φ = 12395183299200.

The previous prime is 31001201011927. The next prime is 31001201012057. The reversal of 31001201012020 is 2021010210013.

It can be written as a sum of positive squares in 4 ways, for example, as 898575076624 + 30102625935396 = 947932^2 + 5486586^2 .

It is a super-2 number, since 2×31001201012020² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331021111 + ... + 331114750.

It is an arithmetic number, because the mean of its divisors is an integer number (2713763830407).

Almost surely, 2^{31001201012020} is an apocalyptic number.

It is an amenable number.

31001201012020 is an abundant number, since it is smaller than the sum of its proper divisors (34129130917748).

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

31001201012020 is a wasteful number, since it uses less digits than its factorization.

31001201012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662138211 (or 662138209 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31001201012020 its reverse (2021010210013), we get a palindrome (33022211222033).

The spelling of 31001201012020 in words is "thirty-one trillion, one billion, two hundred one million, twelve thousand, twenty".