212310133131 has 4 divisors (see below), whose sum is σ = 283080177512. Its totient is φ = 141540088752.

The previous prime is 212310133129. The next prime is 212310133169. The reversal of 212310133131 is 131331013212.

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 212310133131 - 2¹ = 212310133129 is a prime.

It is a super-2 number, since 2×212310133131² (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 = 212310133098 and 212310133107.

It is not an unprimeable number, because it can be changed into a prime (212310133531) 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, 35385022186 + ... + 35385022191.

It is an arithmetic number, because the mean of its divisors is an integer number (70770044378).

Almost surely, 2^212310133131 is an apocalyptic number.

212310133131 is a deficient number, since it is larger than the sum of its proper divisors (70770044381).

212310133131 is an equidigital number, since it uses as much as digits as its factorization.

212310133131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70770044380.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 212310133131 its reverse (131331013212), we get a palindrome (343641146343).

The spelling of 212310133131 in words is "two hundred twelve billion, three hundred ten million, one hundred thirty-three thousand, one hundred thirty-one".