143213630231 has 4 divisors (see below), whose sum is σ = 163672720272. Its totient is φ = 122754540192.

The previous prime is 143213630227. The next prime is 143213630233. The reversal of 143213630231 is 132036312341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143213630231 - 2² = 143213630227 is a prime.

It is a super-2 number, since 2×143213630231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143213630194 and 143213630203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143213630233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10229545010 + ... + 10229545023.

It is an arithmetic number, because the mean of its divisors is an integer number (40918180068).

Almost surely, 2^143213630231 is an apocalyptic number.

143213630231 is a deficient number, since it is larger than the sum of its proper divisors (20459090041).

143213630231 is an equidigital number, since it uses as much as digits as its factorization.

143213630231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20459090040.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 143213630231 its reverse (132036312341), we get a palindrome (275249942572).

The spelling of 143213630231 in words is "one hundred forty-three billion, two hundred thirteen million, six hundred thirty thousand, two hundred thirty-one".