11601631 has 2 divisors, whose sum is σ = 11601632. Its totient is φ = 11601630.

The previous prime is 11601619. The next prime is 11601641. The reversal of 11601631 is 13610611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11601631 - 2⁹ = 11601119 is a prime.

It is a super-2 number, since 2×11601631² = 269195683720322, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 11601599 and 11601608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11601641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5800815 + 5800816.

It is an arithmetic number, because the mean of its divisors is an integer number (5800816).

Almost surely, 2^11601631 is an apocalyptic number.

11601631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11601631 is an equidigital number, since it uses as much as digits as its factorization.

11601631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11601631 is about 3406.1167038139. The cubic root of 11601631 is about 226.3808481741.

The spelling of 11601631 in words is "eleven million, six hundred one thousand, six hundred thirty-one".