74227131 has 16 divisors (see below), whose sum is σ = 119963520. Its totient is φ = 44985960.

The previous prime is 74227121. The next prime is 74227177. The reversal of 74227131 is 13172247.

It is a happy number.

It is not a de Polignac number, because 74227131 - 2¹³ = 74218939 is a prime.

It is a super-2 number, since 2×74227131² = 11019333952982322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 74227095 and 74227104.

It is not an unprimeable number, because it can be changed into a prime (74227121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124665 + ... + 125258.

It is an arithmetic number, because the mean of its divisors is an integer number (7497720).

Almost surely, 2^74227131 is an apocalyptic number.

74227131 is a deficient number, since it is larger than the sum of its proper divisors (45736389).

74227131 is a wasteful number, since it uses less digits than its factorization.

74227131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249943 (or 249937 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 74227131 is about 8615.5168736414. The cubic root of 74227131 is about 420.2627437616.

Adding to 74227131 its reverse (13172247), we get a palindrome (87399378).

The spelling of 74227131 in words is "seventy-four million, two hundred twenty-seven thousand, one hundred thirty-one".