31212100212130 has 16 divisors (see below), whose sum is σ = 58624466485824. Its totient is φ = 11942020950640.

The previous prime is 31212100212103. The next prime is 31212100212157. The reversal of 31212100212130 is 3121200121213.

It is an interprime number because it is at equal distance from previous prime (31212100212103) and next prime (31212100212157).

It is a junction number, because it is equal to n+sod(n) for n = 31212100212098 and 31212100212107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67852391536 + ... + 67852391995.

It is an arithmetic number, because the mean of its divisors is an integer number (3664029155364).

Almost surely, 2^{31212100212130} is an apocalyptic number.

31212100212130 is a deficient number, since it is larger than the sum of its proper divisors (27412366273694).

31212100212130 is a wasteful number, since it uses less digits than its factorization.

31212100212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135704783561.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31212100212130 its reverse (3121200121213), we get a palindrome (34333300333343).

The spelling of 31212100212130 in words is "thirty-one trillion, two hundred twelve billion, one hundred million, two hundred twelve thousand, one hundred thirty".