212230155031 has 4 divisors (see below), whose sum is σ = 212232274200. Its totient is φ = 212228035864.

The previous prime is 212230155017. The next prime is 212230155047. The reversal of 212230155031 is 130551032212.

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 212230155031 - 2⁹ = 212230154519 is a prime.

It is a super-2 number, since 2×212230155031² (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 = 212230154987 and 212230155005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212230155091) 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, 901501 + ... + 1112278.

It is an arithmetic number, because the mean of its divisors is an integer number (53058068550).

Almost surely, 2^212230155031 is an apocalyptic number.

212230155031 is a deficient number, since it is larger than the sum of its proper divisors (2119169).

212230155031 is a wasteful number, since it uses less digits than its factorization.

212230155031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119168.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 212230155031 its reverse (130551032212), we get a palindrome (342781187243).

The spelling of 212230155031 in words is "two hundred twelve billion, two hundred thirty million, one hundred fifty-five thousand, thirty-one".