1431103212 has 216 divisors, whose sum is σ = 4633941312. Its totient is φ = 368222400.

The previous prime is 1431103207. The next prime is 1431103241. The reversal of 1431103212 is 2123011341.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2541643 + ... + 2542205.

It is an arithmetic number, because the mean of its divisors is an integer number (21453432).

Almost surely, 2^1431103212 is an apocalyptic number.

1431103212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1431103212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2316970656).

1431103212 is an abundant number, since it is smaller than the sum of its proper divisors (3202838100).

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

1431103212 is a wasteful number, since it uses less digits than its factorization.

1431103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 717 counting only the distinct ones).

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

The square root of 1431103212 is about 37829.9248214955. The cubic root of 1431103212 is about 1126.9128181213.

Adding to 1431103212 its reverse (2123011341), we get a palindrome (3554114553).

It can be divided in two parts, 143 and 1103212, that added together give a triangular number (1103355 = T₁₄₈₅).

The spelling of 1431103212 in words is "one billion, four hundred thirty-one million, one hundred three thousand, two hundred twelve".