1423631 has 16 divisors (see below), whose sum is σ = 1721088. Its totient is φ = 1161600.

The previous prime is 1423627. The next prime is 1423637. The reversal of 1423631 is 1363241.

It is not a de Polignac number, because 1423631 - 2² = 1423627 is a prime.

It is a super-2 number, since 2×1423631² = 4053450448322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423637) 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, 4136 + ... + 4466.

It is an arithmetic number, because the mean of its divisors is an integer number (107568).

2^1423631 is an apocalyptic number.

1423631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1423631 is a deficient number, since it is larger than the sum of its proper divisors (297457).

1423631 is a wasteful number, since it uses less digits than its factorization.

1423631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382.

The product of its digits is 432, while the sum is 20.

The square root of 1423631 is about 1193.1600898454. The cubic root of 1423631 is about 112.4948079908.

Adding to 1423631 its reverse (1363241), we get a palindrome (2786872).

It can be divided in two parts, 142 and 3631, that added together give a palindrome (3773).

The spelling of 1423631 in words is "one million, four hundred twenty-three thousand, six hundred thirty-one".