31216733761214 has 32 divisors (see below), whose sum is σ = 50095748475360. Its totient is φ = 14537945889792.

The previous prime is 31216733761201. The next prime is 31216733761247. The reversal of 31216733761214 is 41216733761213.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 9072389 + ... + 12030864.

It is an arithmetic number, because the mean of its divisors is an integer number (1565492139855).

Almost surely, 2^{31216733761214} is an apocalyptic number.

31216733761214 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31216733761214 is a deficient number, since it is larger than the sum of its proper divisors (18879014714146).

31216733761214 is a wasteful number, since it uses less digits than its factorization.

31216733761214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21103724.

The product of its digits is 762048, while the sum is 47.

Subtracting 31216733761214 from its reverse (41216733761213), we obtain a palindrome (9999999999999).

The spelling of 31216733761214 in words is "thirty-one trillion, two hundred sixteen billion, seven hundred thirty-three million, seven hundred sixty-one thousand, two hundred fourteen".