1431534197 has 4 divisors (see below), whose sum is σ = 1431632460. Its totient is φ = 1431435936.

The previous prime is 1431534179. The next prime is 1431534211. The reversal of 1431534197 is 7914351341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7914351341 = 13 ⋅608796257.

It can be written as a sum of positive squares in 2 ways, for example, as 1205061796 + 226472401 = 34714^2 + 15049^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431534197 - 2¹⁸ = 1431272053 is a prime.

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 1431534197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431530197) 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, 22448 + ... + 58025.

It is an arithmetic number, because the mean of its divisors is an integer number (357908115).

Almost surely, 2^1431534197 is an apocalyptic number.

It is an amenable number.

1431534197 is a deficient number, since it is larger than the sum of its proper divisors (98263).

1431534197 is an equidigital number, since it uses as much as digits as its factorization.

1431534197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98262.

The product of its digits is 45360, while the sum is 38.

The square root of 1431534197 is about 37835.6207428925. The cubic root of 1431534197 is about 1127.0259322022.

The spelling of 1431534197 in words is "one billion, four hundred thirty-one million, five hundred thirty-four thousand, one hundred ninety-seven".