13212110312331 has 64 divisors (see below), whose sum is σ = 21100157337600. Its totient is φ = 7189887260160.

The previous prime is 13212110312321. The next prime is 13212110312353. The reversal of 13212110312331 is 13321301121231.

It is not a de Polignac number, because 13212110312331 - 2²⁶ = 13212043203467 is a prime.

It is a super-2 number, since 2×13212110312331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13212110312311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 628449286 + ... + 628470308.

It is an arithmetic number, because the mean of its divisors is an integer number (329689958400).

Almost surely, 2^{13212110312331} is an apocalyptic number.

13212110312331 is a deficient number, since it is larger than the sum of its proper divisors (7888047025269).

13212110312331 is a wasteful number, since it uses less digits than its factorization.

13212110312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26696.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 13212110312331 its reverse (13321301121231), we get a palindrome (26533411433562).

The spelling of 13212110312331 in words is "thirteen trillion, two hundred twelve billion, one hundred ten million, three hundred twelve thousand, three hundred thirty-one".