22150431 has 12 divisors (see below), whose sum is σ = 32037408. Its totient is φ = 14747424.

The previous prime is 22150423. The next prime is 22150481. The reversal of 22150431 is 13405122.

It is not a de Polignac number, because 22150431 - 2³ = 22150423 is a prime.

It is a super-2 number, since 2×22150431² = 981283186971522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22150481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9706 + ... + 11768.

It is an arithmetic number, because the mean of its divisors is an integer number (2669784).

Almost surely, 2^22150431 is an apocalyptic number.

22150431 is a deficient number, since it is larger than the sum of its proper divisors (9886977).

22150431 is a wasteful number, since it uses less digits than its factorization.

22150431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262 (or 3259 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22150431 is about 4706.4244389983. The cubic root of 22150431 is about 280.8411398437.

Adding to 22150431 its reverse (13405122), we get a palindrome (35555553).

The spelling of 22150431 in words is "twenty-two million, one hundred fifty thousand, four hundred thirty-one".