1431421343 has 4 divisors (see below), whose sum is σ = 1561550568. Its totient is φ = 1301292120.

The previous prime is 1431421339. The next prime is 1431421349. The reversal of 1431421343 is 3431241341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431241341 = 11 ⋅311931031.

It is a cyclic number.

It is not a de Polignac number, because 1431421343 - 2² = 1431421339 is a prime.

It is a super-2 number, since 2×1431421343² = 4097934122391847298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431421349) 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, 65064596 + ... + 65064617.

It is an arithmetic number, because the mean of its divisors is an integer number (390387642).

Almost surely, 2^1431421343 is an apocalyptic number.

1431421343 is a deficient number, since it is larger than the sum of its proper divisors (130129225).

1431421343 is a wasteful number, since it uses less digits than its factorization.

1431421343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130129224.

The product of its digits is 3456, while the sum is 26.

The square root of 1431421343 is about 37834.1293411121. The cubic root of 1431421343 is about 1126.9963153229.

Adding to 1431421343 its reverse (3431241341), we get a palindrome (4862662684).

The spelling of 1431421343 in words is "one billion, four hundred thirty-one million, four hundred twenty-one thousand, three hundred forty-three".