424423631 has 4 divisors (see below), whose sum is σ = 434293992. Its totient is φ = 414553272.

The previous prime is 424423621. The next prime is 424423651. The reversal of 424423631 is 136324424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424423631 is a prime.

It is a super-2 number, since 2×424423631² = 360270837102448322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424423594 and 424423603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424423621) 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, 4935116 + ... + 4935201.

It is an arithmetic number, because the mean of its divisors is an integer number (108573498).

Almost surely, 2^424423631 is an apocalyptic number.

424423631 is a deficient number, since it is larger than the sum of its proper divisors (9870361).

424423631 is an equidigital number, since it uses as much as digits as its factorization.

424423631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9870360.

The product of its digits is 13824, while the sum is 29.

The square root of 424423631 is about 20601.5443838563. The cubic root of 424423631 is about 751.5072686775.

The spelling of 424423631 in words is "four hundred twenty-four million, four hundred twenty-three thousand, six hundred thirty-one".