1226281180931 has 8 divisors (see below), whose sum is σ = 1256906504784. Its totient is φ = 1196018287200.

The previous prime is 1226281180907. The next prime is 1226281180997. The reversal of 1226281180931 is 1390811826221.

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 1226281180931 - 2¹⁴ = 1226281164547 is a prime.

It is a super-2 number, since 2×1226281180931² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226281180331) 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, 90600680 + ... + 90614213.

It is an arithmetic number, because the mean of its divisors is an integer number (157113313098).

Almost surely, 2^{1226281180931} is an apocalyptic number.

1226281180931 is a deficient number, since it is larger than the sum of its proper divisors (30625323853).

1226281180931 is a wasteful number, since it uses less digits than its factorization.

1226281180931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181215061.

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 1226281180931 in words is "one trillion, two hundred twenty-six billion, two hundred eighty-one million, one hundred eighty thousand, nine hundred thirty-one".