1431434431 has 8 divisors (see below), whose sum is σ = 1660342400. Its totient is φ = 1208630808.

The previous prime is 1431434423. The next prime is 1431434453. The reversal of 1431434431 is 1344341341.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1431434431 - 2³ = 1431434423 is a prime.

It is a super-2 number, since 2×1431434431² = 4098009060504587522, which contains 22 as substring.

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 1431434431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431438431) 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 7 ways as a sum of consecutive naturals, for example, 1525581 + ... + 1526518.

It is an arithmetic number, because the mean of its divisors is an integer number (207542800).

Almost surely, 2^1431434431 is an apocalyptic number.

1431434431 is a deficient number, since it is larger than the sum of its proper divisors (228907969).

1431434431 is an equidigital number, since it uses as much as digits as its factorization.

1431434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052173.

The product of its digits is 6912, while the sum is 28.

The square root of 1431434431 is about 37834.3023062406. The cubic root of 1431434431 is about 1126.9997501566. Note that the first 3 decimals are identical.

Adding to 1431434431 its reverse (1344341341), we get a palindrome (2775775772).

The spelling of 1431434431 in words is "one billion, four hundred thirty-one million, four hundred thirty-four thousand, four hundred thirty-one".