31212020100002 has 32 divisors (see below), whose sum is σ = 55833326486784. Its totient is φ = 12794841892800.

The previous prime is 31212020099983. The next prime is 31212020100011. The reversal of 31212020100002 is 20000102021213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 31212020100002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29955752 + ... + 30980172.

It is an arithmetic number, because the mean of its divisors is an integer number (1744791452712).

Almost surely, 2^{31212020100002} is an apocalyptic number.

31212020100002 is a deficient number, since it is larger than the sum of its proper divisors (24621306386782).

31212020100002 is a wasteful number, since it uses less digits than its factorization.

31212020100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119074.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 31212020100002 its reverse (20000102021213), we get a palindrome (51212122121215).

The spelling of 31212020100002 in words is "thirty-one trillion, two hundred twelve billion, twenty million, one hundred thousand, two".