312421653 has 6 divisors (see below), whose sum is σ = 451275734. Its totient is φ = 208281096.

The previous prime is 312421621. The next prime is 312421661. The reversal of 312421653 is 356124213.

312421653 is a `hidden beast` number, since 3 + 1 + 2 + 4 + 2 + 1 + 653 = 666.

It can be written as a sum of positive squares in only one way, i.e., 223741764 + 88679889 = 14958^2 + 9417^2 .

It is not a de Polignac number, because 312421653 - 2⁵ = 312421621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312421663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17356750 + ... + 17356767.

Almost surely, 2^312421653 is an apocalyptic number.

It is an amenable number.

312421653 is a deficient number, since it is larger than the sum of its proper divisors (138854081).

312421653 is a wasteful number, since it uses less digits than its factorization.

312421653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34713523 (or 34713520 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 312421653 is about 17675.4534029541. The cubic root of 312421653 is about 678.5476883482.

Adding to 312421653 its reverse (356124213), we get a palindrome (668545866).

The spelling of 312421653 in words is "three hundred twelve million, four hundred twenty-one thousand, six hundred fifty-three".