212312511523 has 16 divisors (see below), whose sum is σ = 252460831680. Its totient is φ = 174691230336.

The previous prime is 212312511497. The next prime is 212312511527. The reversal of 212312511523 is 325115213212.

It is not a de Polignac number, because 212312511523 - 2⁵ = 212312511491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212312511491 and 212312511500.

It is not an unprimeable number, because it can be changed into a prime (212312511527) 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, 2987640 + ... + 3057877.

It is an arithmetic number, because the mean of its divisors is an integer number (15778801980).

Almost surely, 2^212312511523 is an apocalyptic number.

212312511523 is a deficient number, since it is larger than the sum of its proper divisors (40148320157).

212312511523 is a wasteful number, since it uses less digits than its factorization.

212312511523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6045726.

The product of its digits is 3600, while the sum is 28.

Adding to 212312511523 its reverse (325115213212), we get a palindrome (537427724735).

The spelling of 212312511523 in words is "two hundred twelve billion, three hundred twelve million, five hundred eleven thousand, five hundred twenty-three".