210143311031 has 4 divisors (see below), whose sum is σ = 219279976752. Its totient is φ = 201006645312.

The previous prime is 210143311013. The next prime is 210143311057. The reversal of 210143311031 is 130113341012.

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 210143311031 - 2²² = 210139116727 is a prime.

It is a super-2 number, since 2×210143311031² (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 = 210143310994 and 210143311012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210143331031) 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, 4568332826 + ... + 4568332871.

It is an arithmetic number, because the mean of its divisors is an integer number (54819994188).

Almost surely, 2^210143311031 is an apocalyptic number.

210143311031 is a deficient number, since it is larger than the sum of its proper divisors (9136665721).

210143311031 is an equidigital number, since it uses as much as digits as its factorization.

210143311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9136665720.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 210143311031 its reverse (130113341012), we get a palindrome (340256652043).

The spelling of 210143311031 in words is "two hundred ten billion, one hundred forty-three million, three hundred eleven thousand, thirty-one".