11421631 has 8 divisors (see below), whose sum is σ = 12376224. Its totient is φ = 10477920.

The previous prime is 11421629. The next prime is 11421661. The reversal of 11421631 is 13612411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11421631 - 2¹ = 11421629 is a prime.

It is a super-2 number, since 2×11421631² = 260907309400322, 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 = 11421599 and 11421608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460 + ... + 4801.

It is an arithmetic number, because the mean of its divisors is an integer number (1547028).

Almost surely, 2^11421631 is an apocalyptic number.

11421631 is a deficient number, since it is larger than the sum of its proper divisors (954593).

11421631 is a wasteful number, since it uses less digits than its factorization.

11421631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441.

The product of its digits is 144, while the sum is 19.

The square root of 11421631 is about 3379.5903597921. The cubic root of 11421631 is about 225.2039697714.

The spelling of 11421631 in words is "eleven million, four hundred twenty-one thousand, six hundred thirty-one".