1226204531 has 8 divisors (see below), whose sum is σ = 1273498560. Its totient is φ = 1179655488.

The previous prime is 1226204519. The next prime is 1226204533. The reversal of 1226204531 is 1354026221.

It is a happy number.

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 1226204531 - 2⁶ = 1226204467 is a prime.

It is a super-2 number, since 2×1226204531² = 3007155103689859922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1226204531.

It is not an unprimeable number, because it can be changed into a prime (1226204533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182891 + ... + 189476.

It is an arithmetic number, because the mean of its divisors is an integer number (159187320).

Almost surely, 2^1226204531 is an apocalyptic number.

1226204531 is a deficient number, since it is larger than the sum of its proper divisors (47294029).

1226204531 is an equidigital number, since it uses as much as digits as its factorization.

1226204531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372493.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1226204531 is about 35017.2033577783. The cubic root of 1226204531 is about 1070.3380685618.

The spelling of 1226204531 in words is "one billion, two hundred twenty-six million, two hundred four thousand, five hundred thirty-one".