212442523131 has 4 divisors (see below), whose sum is σ = 283256697512. Its totient is φ = 141628348752.

The previous prime is 212442523103. The next prime is 212442523133. The reversal of 212442523131 is 131325244212.

It is a happy number.

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

It is not a de Polignac number, because 212442523131 - 2¹⁰ = 212442522107 is a prime.

It is a super-2 number, since 2×212442523131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212442523133) 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, 35407087186 + ... + 35407087191.

It is an arithmetic number, because the mean of its divisors is an integer number (70814174378).

Almost surely, 2^212442523131 is an apocalyptic number.

212442523131 is a deficient number, since it is larger than the sum of its proper divisors (70814174381).

212442523131 is an equidigital number, since it uses as much as digits as its factorization.

212442523131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70814174380.

The product of its digits is 11520, while the sum is 30.

Adding to 212442523131 its reverse (131325244212), we get a palindrome (343767767343).

The spelling of 212442523131 in words is "two hundred twelve billion, four hundred forty-two million, five hundred twenty-three thousand, one hundred thirty-one".