31213130020103 has 8 divisors (see below), whose sum is σ = 31344475070400. Its totient is φ = 31081791188448.

The previous prime is 31213130020097. The next prime is 31213130020129. The reversal of 31213130020103 is 30102003131213.

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 31213130020103 - 2¹² = 31213130016007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213130020603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8645525 + ... + 11712017.

It is an arithmetic number, because the mean of its divisors is an integer number (3918059383800).

Almost surely, 2^{31213130020103} is an apocalyptic number.

31213130020103 is a deficient number, since it is larger than the sum of its proper divisors (131345050297).

31213130020103 is a wasteful number, since it uses less digits than its factorization.

31213130020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109321.

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

Adding to 31213130020103 its reverse (30102003131213), we get a palindrome (61315133151316).

The spelling of 31213130020103 in words is "thirty-one trillion, two hundred thirteen billion, one hundred thirty million, twenty thousand, one hundred three".