31421003203213 has 12 divisors (see below), whose sum is σ = 34031516910240. Its totient is φ = 28997532482256.

The previous prime is 31421003203181. The next prime is 31421003203229. The reversal of 31421003203213 is 31230230012413.

It is not a de Polignac number, because 31421003203213 - 2⁵ = 31421003203181 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 (31421003303213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19978833 + ... + 21494086.

It is an arithmetic number, because the mean of its divisors is an integer number (2835959742520).

Almost surely, 2^{31421003203213} is an apocalyptic number.

It is an amenable number.

31421003203213 is a deficient number, since it is larger than the sum of its proper divisors (2610513707027).

31421003203213 is a wasteful number, since it uses less digits than its factorization.

31421003203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41477428 (or 41477415 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31421003203213 its reverse (31230230012413), we get a palindrome (62651233215626).

The spelling of 31421003203213 in words is "thirty-one trillion, four hundred twenty-one billion, three million, two hundred three thousand, two hundred thirteen".