213143022031 has 4 divisors (see below), whose sum is σ = 213146397064. Its totient is φ = 213139647000.

The previous prime is 213143021989. The next prime is 213143022073. The reversal of 213143022031 is 130220341312.

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

It is an interprime number because it is at equal distance from previous prime (213143021989) and next prime (213143022073).

It is a cyclic number.

It is not a de Polignac number, because 213143022031 - 2¹⁷ = 213142890959 is a prime.

It is a super-3 number, since 3×213143022031³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213143021993 and 213143022011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213143022431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1590945 + ... + 1719706.

It is an arithmetic number, because the mean of its divisors is an integer number (53286599266).

Almost surely, 2^213143022031 is an apocalyptic number.

213143022031 is a deficient number, since it is larger than the sum of its proper divisors (3375033).

213143022031 is an equidigital number, since it uses as much as digits as its factorization.

213143022031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375032.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213143022031 its reverse (130220341312), we get a palindrome (343363363343).

The spelling of 213143022031 in words is "two hundred thirteen billion, one hundred forty-three million, twenty-two thousand, thirty-one".