1212431001430 has 96 divisors (see below), whose sum is σ = 2514095068320. Its totient is φ = 417443120640.

The previous prime is 1212431001389. The next prime is 1212431001437. The reversal of 1212431001430 is 341001342121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212431001437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79293226 + ... + 79308514.

It is an arithmetic number, because the mean of its divisors is an integer number (26188490295).

Almost surely, 2^{1212431001430} is an apocalyptic number.

1212431001430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212431001430 is an abundant number, since it is smaller than the sum of its proper divisors (1301664066890).

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

1212431001430 is a wasteful number, since it uses less digits than its factorization.

1212431001430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17342 (or 17323 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1212431001430 its reverse (341001342121), we get a palindrome (1553432343551).

The spelling of 1212431001430 in words is "one trillion, two hundred twelve billion, four hundred thirty-one million, one thousand, four hundred thirty".