312434021 has 8 divisors (see below), whose sum is σ = 315304704. Its totient is φ = 309575920.

The previous prime is 312433987. The next prime is 312434029. The reversal of 312434021 is 120434213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312434021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312433984 and 312434002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312434029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50900 + ... + 56706.

It is an arithmetic number, because the mean of its divisors is an integer number (39413088).

Almost surely, 2^312434021 is an apocalyptic number.

It is an amenable number.

312434021 is a deficient number, since it is larger than the sum of its proper divisors (2870683).

312434021 is a wasteful number, since it uses less digits than its factorization.

312434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 312434021 is about 17675.8032632183. The cubic root of 312434021 is about 678.5566422379.

Adding to 312434021 its reverse (120434213), we get a palindrome (432868234).

The spelling of 312434021 in words is "three hundred twelve million, four hundred thirty-four thousand, twenty-one".