212303123131 has 4 divisors (see below), whose sum is σ = 231603407064. Its totient is φ = 193002839200.

The previous prime is 212303123113. The next prime is 212303123141. The reversal of 212303123131 is 131321303212.

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 212303123131 - 2¹⁹ = 212302598843 is a prime.

It is a super-2 number, since 2×212303123131² (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 (212303123141) 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, 9650141950 + ... + 9650141971.

It is an arithmetic number, because the mean of its divisors is an integer number (57900851766).

Almost surely, 2^212303123131 is an apocalyptic number.

212303123131 is a deficient number, since it is larger than the sum of its proper divisors (19300283933).

212303123131 is a wasteful number, since it uses less digits than its factorization.

212303123131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19300283932.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 212303123131 its reverse (131321303212), we get a palindrome (343624426343).

The spelling of 212303123131 in words is "two hundred twelve billion, three hundred three million, one hundred twenty-three thousand, one hundred thirty-one".