1431642443 has 16 divisors (see below), whose sum is σ = 1833149184. Its totient is φ = 1085412960.

The previous prime is 1431642439. The next prime is 1431642461. The reversal of 1431642443 is 3442461341.

It is a cyclic number.

It is not a de Polignac number, because 1431642443 - 2² = 1431642439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431641443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248405 + ... + 254102.

It is an arithmetic number, because the mean of its divisors is an integer number (114571824).

Almost surely, 2^1431642443 is an apocalyptic number.

1431642443 is a deficient number, since it is larger than the sum of its proper divisors (401506741).

1431642443 is a wasteful number, since it uses less digits than its factorization.

1431642443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502562.

The product of its digits is 27648, while the sum is 32.

The square root of 1431642443 is about 37837.0511932418. The cubic root of 1431642443 is about 1127.0543383171.

The spelling of 1431642443 in words is "one billion, four hundred thirty-one million, six hundred forty-two thousand, four hundred forty-three".