212773310131 has 4 divisors (see below), whose sum is σ = 215336844072. Its totient is φ = 210209776192.

The previous prime is 212773310129. The next prime is 212773310161. The reversal of 212773310131 is 131013377212.

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 212773310131 - 2¹ = 212773310129 is a prime.

It is a super-2 number, since 2×212773310131² (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 = 212773310093 and 212773310102.

It is not an unprimeable number, because it can be changed into a prime (212773310161) 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, 1281766846 + ... + 1281767011.

It is an arithmetic number, because the mean of its divisors is an integer number (53834211018).

Almost surely, 2^212773310131 is an apocalyptic number.

212773310131 is a deficient number, since it is larger than the sum of its proper divisors (2563533941).

212773310131 is an equidigital number, since it uses as much as digits as its factorization.

212773310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563533940.

The product of its (nonzero) digits is 5292, while the sum is 31.

Adding to 212773310131 its reverse (131013377212), we get a palindrome (343786687343).

The spelling of 212773310131 in words is "two hundred twelve billion, seven hundred seventy-three million, three hundred ten thousand, one hundred thirty-one".