312124421 has 16 divisors (see below), whose sum is σ = 377336064. Its totient is φ = 252388224.

The previous prime is 312124409. The next prime is 312124429. The reversal of 312124421 is 124421213.

It is a cyclic number.

It is not a de Polignac number, because 312124421 - 2⁶ = 312124357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312124393 and 312124402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312124429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1526 + ... + 25031.

It is an arithmetic number, because the mean of its divisors is an integer number (23583504).

Almost surely, 2^312124421 is an apocalyptic number.

It is an amenable number.

312124421 is a deficient number, since it is larger than the sum of its proper divisors (65211643).

312124421 is a wasteful number, since it uses less digits than its factorization.

312124421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26660.

The product of its digits is 384, while the sum is 20.

The square root of 312124421 is about 17667.0433576193. The cubic root of 312124421 is about 678.3324342960.

Adding to 312124421 its reverse (124421213), we get a palindrome (436545634).

The spelling of 312124421 in words is "three hundred twelve million, one hundred twenty-four thousand, four hundred twenty-one".