315442421 has 16 divisors (see below), whose sum is σ = 367607808. Its totient is φ = 265095600.

The previous prime is 315442411. The next prime is 315442423. The reversal of 315442421 is 124244513.

It is not a de Polignac number, because 315442421 - 2⁶ = 315442357 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 (315442423) 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, 93266 + ... + 96588.

It is an arithmetic number, because the mean of its divisors is an integer number (22975488).

Almost surely, 2^315442421 is an apocalyptic number.

It is an amenable number.

315442421 is a deficient number, since it is larger than the sum of its proper divisors (52165387).

315442421 is a wasteful number, since it uses less digits than its factorization.

315442421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592.

The product of its digits is 3840, while the sum is 26.

The square root of 315442421 is about 17760.6987756676. The cubic root of 315442421 is about 680.7276100097.

Adding to 315442421 its reverse (124244513), we get a palindrome (439686934).

The spelling of 315442421 in words is "three hundred fifteen million, four hundred forty-two thousand, four hundred twenty-one".