1212323408 has 10 divisors (see below), whose sum is σ = 2348876634. Its totient is φ = 606161696.

The previous prime is 1212323407. The next prime is 1212323423. The reversal of 1212323408 is 8043232121.

It can be written as a sum of positive squares in only one way, i.e., 1141628944 + 70694464 = 33788^2 + 8408^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212323401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37885091 + ... + 37885122.

Almost surely, 2^1212323408 is an apocalyptic number.

It is an amenable number.

1212323408 is a deficient number, since it is larger than the sum of its proper divisors (1136553226).

1212323408 is an equidigital number, since it uses as much as digits as its factorization.

1212323408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75770221 (or 75770215 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1212323408 is about 34818.4348872835. The cubic root of 1212323408 is about 1066.2838471737.

Adding to 1212323408 its reverse (8043232121), we get a palindrome (9255555529).

The spelling of 1212323408 in words is "one billion, two hundred twelve million, three hundred twenty-three thousand, four hundred eight".