22311157 has 8 divisors (see below), whose sum is σ = 25771392. Its totient is φ = 19089600.

The previous prime is 22311131. The next prime is 22311161. The reversal of 22311157 is 75111322.

It is a happy number.

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 22311157 - 2¹¹ = 22309109 is a prime.

It is a super-3 number, since 3×22311157³ (a number of 23 digits) contains 333 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 (22311557) 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 in 7 ways as a sum of consecutive naturals, for example, 59469 + ... + 59842.

It is an arithmetic number, because the mean of its divisors is an integer number (3221424).

Almost surely, 2^22311157 is an apocalyptic number.

It is an amenable number.

22311157 is a deficient number, since it is larger than the sum of its proper divisors (3460235).

22311157 is a wasteful number, since it uses less digits than its factorization.

22311157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119339.

The product of its digits is 420, while the sum is 22.

The square root of 22311157 is about 4723.4687465887. The cubic root of 22311157 is about 281.5187750319.

Adding to 22311157 its reverse (75111322), we get a palindrome (97422479).

The spelling of 22311157 in words is "twenty-two million, three hundred eleven thousand, one hundred fifty-seven".