31003010010020 has 36 divisors (see below), whose sum is σ = 66913508953620. Its totient is φ = 12066036317568.

The previous prime is 31003010010017. The next prime is 31003010010073. The reversal of 31003010010020 is 2001001030013.

It can be written as a sum of positive squares in 6 ways, for example, as 15211669245796 + 15791340764224 = 3900214^2 + 3973832^2 .

It is a super-2 number, since 2×31003010010020² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31003010009983 and 31003010010010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566134235 + ... + 566188994.

It is an arithmetic number, because the mean of its divisors is an integer number (1858708582045).

Almost surely, 2^{31003010010020} is an apocalyptic number.

It is an amenable number.

31003010010020 is an abundant number, since it is smaller than the sum of its proper divisors (35910498943600).

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

31003010010020 is a wasteful number, since it uses less digits than its factorization.

31003010010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132323312 (or 1132323273 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 31003010010020 its reverse (2001001030013), we get a palindrome (33004011040033).

The spelling of 31003010010020 in words is "thirty-one trillion, three billion, ten million, ten thousand, twenty".