212131895547623 has 16 divisors (see below), whose sum is σ = 224720629033824. Its totient is φ = 199555450967040.

The previous prime is 212131895547581. The next prime is 212131895547653. The reversal of 212131895547623 is 326745598131212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212131895547623 - 2²⁴ = 212131878770407 is a prime.

It is a super-2 number, since 2×212131895547623² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212131895547653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289098683 + ... + 289831523.

It is an arithmetic number, because the mean of its divisors is an integer number (14045039314614).

Almost surely, 2^{212131895547623} is an apocalyptic number.

212131895547623 is a deficient number, since it is larger than the sum of its proper divisors (12588733486201).

212131895547623 is a wasteful number, since it uses less digits than its factorization.

212131895547623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741202.

The product of its digits is 21772800, while the sum is 59.

The spelling of 212131895547623 in words is "two hundred twelve trillion, one hundred thirty-one billion, eight hundred ninety-five million, five hundred forty-seven thousand, six hundred twenty-three".