31226148 has 30 divisors (see below), whose sum is σ = 81632166. Its totient is φ = 10408608.

The previous prime is 31226147. The next prime is 31226159. The reversal of 31226148 is 84162213.

It can be written as a sum of positive squares in only one way, i.e., 29354724 + 1871424 = 5418^2 + 1368^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31226147) 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 9 ways as a sum of consecutive naturals, for example, 47865 + ... + 48512.

Almost surely, 2^31226148 is an apocalyptic number.

It is an amenable number.

31226148 is an abundant number, since it is smaller than the sum of its proper divisors (50406018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31226148 is a wasteful number, since it uses less digits than its factorization.

31226148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96393 (or 96382 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 31226148 is about 5588.0361487736. The cubic root of 31226148 is about 314.9001043780.

The spelling of 31226148 in words is "thirty-one million, two hundred twenty-six thousand, one hundred forty-eight".