31212111200046 has 16 divisors (see below), whose sum is σ = 71341968457344. Its totient is φ = 8917746057144.

The previous prime is 31212111199999. The next prime is 31212111200047. The reversal of 31212111200046 is 64000211121213.

It is a junction number, because it is equal to n+sod(n) for n = 31212111199989 and 31212111200025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212111200047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371572752340 + ... + 371572752423.

It is an arithmetic number, because the mean of its divisors is an integer number (4458873028584).

Almost surely, 2^{31212111200046} is an apocalyptic number.

31212111200046 is an abundant number, since it is smaller than the sum of its proper divisors (40129857257298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31212111200046 is a wasteful number, since it uses less digits than its factorization.

31212111200046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743145504775.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 31212111200046 its reverse (64000211121213), we get a palindrome (95212322321259).

The spelling of 31212111200046 in words is "thirty-one trillion, two hundred twelve billion, one hundred eleven million, two hundred thousand, forty-six".