1213237268 has 12 divisors (see below), whose sum is σ = 2137415700. Its totient is φ = 602547072.

The previous prime is 1213237261. The next prime is 1213237271. The reversal of 1213237268 is 8627323121.

It can be written as a sum of positive squares in 2 ways, for example, as 550277764 + 662959504 = 23458^2 + 25748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213237261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017221 + ... + 1018412.

It is an arithmetic number, because the mean of its divisors is an integer number (178117975).

Almost surely, 2^1213237268 is an apocalyptic number.

It is an amenable number.

1213237268 is a deficient number, since it is larger than the sum of its proper divisors (924178432).

1213237268 is a wasteful number, since it uses less digits than its factorization.

1213237268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035786 (or 2035784 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 1213237268 is about 34831.5556356589. Note that the first 3 decimals coincide. The cubic root of 1213237268 is about 1066.5517045807.

The spelling of 1213237268 in words is "one billion, two hundred thirteen million, two hundred thirty-seven thousand, two hundred sixty-eight".