31212020100004 has 12 divisors (see below), whose sum is σ = 54667679961328. Its totient is φ = 15592682968200.

The previous prime is 31212020099983. The next prime is 31212020100011. The reversal of 31212020100004 is 40000102021213.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3331765182 + ... + 3331774549.

Almost surely, 2^{31212020100004} is an apocalyptic number.

It is an amenable number.

31212020100004 is a deficient number, since it is larger than the sum of its proper divisors (23455659861324).

31212020100004 is a wasteful number, since it uses less digits than its factorization.

31212020100004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663540906 (or 6663540904 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 31212020100004 its reverse (40000102021213), we get a palindrome (71212122121217).

The spelling of 31212020100004 in words is "thirty-one trillion, two hundred twelve billion, twenty million, one hundred thousand, four".