11142631 has 2 divisors, whose sum is σ = 11142632. Its totient is φ = 11142630.

The previous prime is 11142617. The next prime is 11142653. The reversal of 11142631 is 13624111.

11142631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (13624111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11142631 is a prime.

It is a super-2 number, since 2×11142631² = 248316451204322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11142599 and 11142608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11142331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571315 + 5571316.

It is an arithmetic number, because the mean of its divisors is an integer number (5571316).

Almost surely, 2^11142631 is an apocalyptic number.

11142631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11142631 is an equidigital number, since it uses as much as digits as its factorization.

11142631 is an evil number, because the sum of its binary digits is even.

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

The square root of 11142631 is about 3338.0579683403. The cubic root of 11142631 is about 223.3551220048.

Adding to 11142631 its reverse (13624111), we get a palindrome (24766742).

The spelling of 11142631 in words is "eleven million, one hundred forty-two thousand, six hundred thirty-one".