1213225308 has 18 divisors (see below), whose sum is σ = 3066764064. Its totient is φ = 404408424.

The previous prime is 1213225303. The next prime is 1213225327. The reversal of 1213225308 is 8035223121.

1213225308 is a `hidden beast` number, since 121 + 3 + 2 + 2 + 530 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213225303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16850316 + ... + 16850387.

Almost surely, 2^1213225308 is an apocalyptic number.

1213225308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1213225308 is an abundant number, since it is smaller than the sum of its proper divisors (1853538756).

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

1213225308 is a wasteful number, since it uses less digits than its factorization.

1213225308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33700713 (or 33700708 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1213225308 is about 34831.3839518329. The cubic root of 1213225308 is about 1066.5481999075.

Adding to 1213225308 its reverse (8035223121), we get a palindrome (9248448429).

The spelling of 1213225308 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, three hundred eight".