212631560143 has 4 divisors (see below), whose sum is σ = 221876410608. Its totient is φ = 203386709680.

The previous prime is 212631560123. The next prime is 212631560159. The reversal of 212631560143 is 341065136212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212631560143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212631560099 and 212631560108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212631560123) 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, 4622425198 + ... + 4622425243.

It is an arithmetic number, because the mean of its divisors is an integer number (55469102652).

Almost surely, 2^212631560143 is an apocalyptic number.

212631560143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212631560143 is a deficient number, since it is larger than the sum of its proper divisors (9244850465).

212631560143 is an equidigital number, since it uses as much as digits as its factorization.

212631560143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9244850464.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 212631560143 its reverse (341065136212), we get a palindrome (553696696355).

The spelling of 212631560143 in words is "two hundred twelve billion, six hundred thirty-one million, five hundred sixty thousand, one hundred forty-three".