22150631 has 4 divisors (see below), whose sum is σ = 22160112. Its totient is φ = 22141152.

The previous prime is 22150591. The next prime is 22150691. The reversal of 22150631 is 13605122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22150631 - 2⁶ = 22150567 is a prime.

It is a super-2 number, since 2×22150631² = 981300907396322, 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 (22150691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526 + ... + 6828.

It is an arithmetic number, because the mean of its divisors is an integer number (5540028).

Almost surely, 2^22150631 is an apocalyptic number.

22150631 is a deficient number, since it is larger than the sum of its proper divisors (9481).

22150631 is an equidigital number, since it uses as much as digits as its factorization.

22150631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9480.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 22150631 is about 4706.4456865027. The cubic root of 22150631 is about 280.8419850953.

Adding to 22150631 its reverse (13605122), we get a palindrome (35755753).

It can be divided in two parts, 221506 and 31, that multiplied together give a palindrome (6866686).

The spelling of 22150631 in words is "twenty-two million, one hundred fifty thousand, six hundred thirty-one".