212002023131 has 4 divisors (see below), whose sum is σ = 224472730392. Its totient is φ = 199531315872.

The previous prime is 212002023083. The next prime is 212002023137. The reversal of 212002023131 is 131320200212.

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 212002023131 - 2²² = 211997828827 is a prime.

It is a super-2 number, since 2×212002023131² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 12470707243 = 212002023131 / (2 + 1 + 2 + 0 + 0 + 2 + 0 + 2 + 3 + 1 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212002023137) 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, 6235353605 + ... + 6235353638.

It is an arithmetic number, because the mean of its divisors is an integer number (56118182598).

Almost surely, 2^212002023131 is an apocalyptic number.

212002023131 is a deficient number, since it is larger than the sum of its proper divisors (12470707261).

212002023131 is a wasteful number, since it uses less digits than its factorization.

212002023131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12470707260.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212002023131 its reverse (131320200212), we get a palindrome (343322223343).

The spelling of 212002023131 in words is "two hundred twelve billion, two million, twenty-three thousand, one hundred thirty-one".