1212431330 has 64 divisors (see below), whose sum is σ = 2558708352. Its totient is φ = 408714240.

The previous prime is 1212431299. The next prime is 1212431357. The reversal of 1212431330 is 331342121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120452 + ... + 130128.

It is an arithmetic number, because the mean of its divisors is an integer number (39979818).

Almost surely, 2^1212431330 is an apocalyptic number.

1212431330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212431330 is an abundant number, since it is smaller than the sum of its proper divisors (1346277022).

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

1212431330 is a wasteful number, since it uses less digits than its factorization.

1212431330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9779.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1212431330 is about 34819.9846352637. The cubic root of 1212431330 is about 1066.3154867153.

Adding to 1212431330 its reverse (331342121), we get a palindrome (1543773451).

The spelling of 1212431330 in words is "one billion, two hundred twelve million, four hundred thirty-one thousand, three hundred thirty".