31300002213021 has 16 divisors (see below), whose sum is σ = 46428554827200. Its totient is φ = 20840486611824.

The previous prime is 31300002213017. The next prime is 31300002213049. The reversal of 31300002213021 is 12031220000313.

It is not a de Polignac number, because 31300002213021 - 2² = 31300002213017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31300002212985 and 31300002213003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300002213071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727242811 + ... + 727285848.

It is an arithmetic number, because the mean of its divisors is an integer number (2901784676700).

Almost surely, 2^{31300002213021} is an apocalyptic number.

It is an amenable number.

31300002213021 is a deficient number, since it is larger than the sum of its proper divisors (15128552614179).

31300002213021 is a wasteful number, since it uses less digits than its factorization.

31300002213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454529465 (or 1454529459 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31300002213021 its reverse (12031220000313), we get a palindrome (43331222213334).

The spelling of 31300002213021 in words is "thirty-one trillion, three hundred billion, two million, two hundred thirteen thousand, twenty-one".