212312553 has 16 divisors (see below), whose sum is σ = 285714240. Its totient is φ = 140232384.

The previous prime is 212312537. The next prime is 212312591. The reversal of 212312553 is 355213212.

It is a happy number.

It is not a de Polignac number, because 212312553 - 2⁴ = 212312537 is a prime.

It is a super-2 number, since 2×212312553² = 90153240322755618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212311553) 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, 248475 + ... + 249327.

It is an arithmetic number, because the mean of its divisors is an integer number (17857140).

Almost surely, 2^212312553 is an apocalyptic number.

It is an amenable number.

212312553 is a deficient number, since it is larger than the sum of its proper divisors (73401687).

212312553 is a wasteful number, since it uses less digits than its factorization.

212312553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528.

The product of its digits is 1800, while the sum is 24.

The square root of 212312553 is about 14570.9489395852. The cubic root of 212312553 is about 596.5660817237.

Adding to 212312553 its reverse (355213212), we get a palindrome (567525765).

The spelling of 212312553 in words is "two hundred twelve million, three hundred twelve thousand, five hundred fifty-three".