421232313 has 4 divisors (see below), whose sum is σ = 561643088. Its totient is φ = 280821540.

The previous prime is 421232269. The next prime is 421232333. The reversal of 421232313 is 313232124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 421232313 - 2⁶ = 421232249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421232313.

It is not an unprimeable number, because it can be changed into a prime (421232333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70205383 + ... + 70205388.

It is an arithmetic number, because the mean of its divisors is an integer number (140410772).

Almost surely, 2^421232313 is an apocalyptic number.

It is an amenable number.

421232313 is a deficient number, since it is larger than the sum of its proper divisors (140410775).

421232313 is a wasteful number, since it uses less digits than its factorization.

421232313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140410774.

The product of its digits is 864, while the sum is 21.

The square root of 421232313 is about 20523.9448693471. The cubic root of 421232313 is about 749.6189548834.

Adding to 421232313 its reverse (313232124), we get a palindrome (734464437).

The spelling of 421232313 in words is "four hundred twenty-one million, two hundred thirty-two thousand, three hundred thirteen".