212454531 has 12 divisors (see below), whose sum is σ = 309120552. Its totient is φ = 140601696.

The previous prime is 212454527. The next prime is 212454533. The reversal of 212454531 is 135454212.

212454531 is a `hidden beast` number, since 2 + 124 + 5 + 4 + 531 = 666.

It is not a de Polignac number, because 212454531 - 2² = 212454527 is a prime.

It is a super-2 number, since 2×212454531² = 90273855484859922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212454495 and 212454504.

It is not an unprimeable number, because it can be changed into a prime (212454533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84921 + ... + 87386.

It is an arithmetic number, because the mean of its divisors is an integer number (25760046).

Almost surely, 2^212454531 is an apocalyptic number.

212454531 is a deficient number, since it is larger than the sum of its proper divisors (96666021).

212454531 is a wasteful number, since it uses less digits than its factorization.

212454531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172450 (or 172447 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 212454531 is about 14575.8200798446. The cubic root of 212454531 is about 596.6990309768.

The spelling of 212454531 in words is "two hundred twelve million, four hundred fifty-four thousand, five hundred thirty-one".