1431212201 has 4 divisors (see below), whose sum is σ = 1515401172. Its totient is φ = 1347023232.

The previous prime is 1431212197. The next prime is 1431212261. The reversal of 1431212201 is 1022121341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1022121341 = 18059 ⋅56599.

It can be written as a sum of positive squares in 2 ways, for example, as 445252201 + 985960000 = 21101^2 + 31400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431212201 - 2² = 1431212197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 84188953 = 1431212201 / (1 + 4 + 3 + 1 + 2 + 1 + 2 + 2 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1431212201.

It is not an unprimeable number, because it can be changed into a prime (1431212261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42094460 + ... + 42094493.

It is an arithmetic number, because the mean of its divisors is an integer number (378850293).

Almost surely, 2^1431212201 is an apocalyptic number.

It is an amenable number.

1431212201 is a deficient number, since it is larger than the sum of its proper divisors (84188971).

1431212201 is an equidigital number, since it uses as much as digits as its factorization.

1431212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84188970.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1431212201 is about 37831.3653071099. The cubic root of 1431212201 is about 1126.9414249523.

Adding to 1431212201 its reverse (1022121341), we get a palindrome (2453333542).

The spelling of 1431212201 in words is "one billion, four hundred thirty-one million, two hundred twelve thousand, two hundred one".