1226231500 has 96 divisors (see below), whose sum is σ = 3036196800. Its totient is φ = 428889600.

The previous prime is 1226231497. The next prime is 1226231507. The reversal of 1226231500 is 51326221.

It is not an unprimeable number, because it can be changed into a prime (1226231507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118536 + ... + 128464.

It is an arithmetic number, because the mean of its divisors is an integer number (31627050).

Almost surely, 2^1226231500 is an apocalyptic number.

1226231500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226231500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1518098400).

1226231500 is an abundant number, since it is smaller than the sum of its proper divisors (1809965300).

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

1226231500 is a wasteful number, since it uses less digits than its factorization.

1226231500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9980 (or 9968 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1226231500 is about 35017.5884378122. The cubic root of 1226231500 is about 1070.3459154680.

Adding to 1226231500 its reverse (51326221), we get a palindrome (1277557721).

The spelling of 1226231500 in words is "one billion, two hundred twenty-six million, two hundred thirty-one thousand, five hundred".