143312312121 has 64 divisors (see below), whose sum is σ = 216509967360. Its totient is φ = 83555746560.

The previous prime is 143312312089. The next prime is 143312312131. The reversal of 143312312121 is 121213213341.

It is not a de Polignac number, because 143312312121 - 2⁵ = 143312312089 is a prime.

It is a super-3 number, since 3×143312312121³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143312312091 and 143312312100.

It is not an unprimeable number, because it can be changed into a prime (143312312131) 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, 112225135 + ... + 112226411.

It is an arithmetic number, because the mean of its divisors is an integer number (3382968240).

Almost surely, 2^143312312121 is an apocalyptic number.

143312312121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143312312121 is a deficient number, since it is larger than the sum of its proper divisors (73197655239).

143312312121 is a wasteful number, since it uses less digits than its factorization.

143312312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294.

The product of its digits is 864, while the sum is 24.

Adding to 143312312121 its reverse (121213213341), we get a palindrome (264525525462).

The spelling of 143312312121 in words is "one hundred forty-three billion, three hundred twelve million, three hundred twelve thousand, one hundred twenty-one".