1212131430 has 48 divisors (see below), whose sum is σ = 3174247440. Its totient is φ = 320906304.

The previous prime is 1212131423. The next prime is 1212131443. The reversal of 1212131430 is 341312121.

1212131430 is a `hidden beast` number, since 1 + 21 + 213 + 1 + 430 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35937 + ... + 60956.

It is an arithmetic number, because the mean of its divisors is an integer number (66130155).

Almost surely, 2^1212131430 is an apocalyptic number.

1212131430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212131430 is an abundant number, since it is smaller than the sum of its proper divisors (1962116010).

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

1212131430 is a wasteful number, since it uses less digits than its factorization.

1212131430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97045 (or 97042 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1212131430 is about 34815.6779339423. The cubic root of 1212131430 is about 1066.2275602552.

Adding to 1212131430 its reverse (341312121), we get a palindrome (1553443551).

The spelling of 1212131430 in words is "one billion, two hundred twelve million, one hundred thirty-one thousand, four hundred thirty".