1228210131 has 8 divisors (see below), whose sum is σ = 1638208960. Its totient is φ = 818509032.

The previous prime is 1228210121. The next prime is 1228210163. The reversal of 1228210131 is 1310128221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1228210131 - 2⁵ = 1228210099 is a prime.

It is a super-2 number, since 2×1228210131² = 3017000251782074322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1228210098 and 1228210107.

It is not an unprimeable number, because it can be changed into a prime (1228210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64621 + ... + 81438.

It is an arithmetic number, because the mean of its divisors is an integer number (204776120).

Almost surely, 2^1228210131 is an apocalyptic number.

1228210131 is a deficient number, since it is larger than the sum of its proper divisors (409998829).

1228210131 is a wasteful number, since it uses less digits than its factorization.

1228210131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148865.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1228210131 is about 35045.8290100263. The cubic root of 1228210131 is about 1070.9213047899.

Adding to 1228210131 its reverse (1310128221), we get a palindrome (2538338352).

The spelling of 1228210131 in words is "one billion, two hundred twenty-eight million, two hundred ten thousand, one hundred thirty-one".