4011631 has 4 divisors (see below), whose sum is σ = 4320232. Its totient is φ = 3703032.

The previous prime is 4011583. The next prime is 4011647. The reversal of 4011631 is 1361104.

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-4011631 is a prime.

It is a super-2 number, since 2×4011631² = 32186366560322, 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 (4011671) 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, 154281 + ... + 154306.

It is an arithmetic number, because the mean of its divisors is an integer number (1080058).

Almost surely, 2^4011631 is an apocalyptic number.

4011631 is a deficient number, since it is larger than the sum of its proper divisors (308601).

4011631 is a wasteful number, since it uses less digits than its factorization.

4011631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308600.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 4011631 is about 2002.9056393150. The cubic root of 4011631 is about 158.8938151565.

Adding to 4011631 its reverse (1361104), we get a palindrome (5372735).

The spelling of 4011631 in words is "four million, eleven thousand, six hundred thirty-one".