1431720489 has 16 divisors (see below), whose sum is σ = 1923134400. Its totient is φ = 947420736.

The previous prime is 1431720487. The next prime is 1431720503. The reversal of 1431720489 is 9840271341.

It is not a de Polignac number, because 1431720489 - 2¹ = 1431720487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1431720481) 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, 225247 + ... + 231515.

It is an arithmetic number, because the mean of its divisors is an integer number (120195900).

Almost surely, 2^1431720489 is an apocalyptic number.

It is an amenable number.

1431720489 is a deficient number, since it is larger than the sum of its proper divisors (491413911).

1431720489 is a wasteful number, since it uses less digits than its factorization.

1431720489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1431720489 is about 37838.0825227706. The cubic root of 1431720489 is about 1127.0748184039.

The spelling of 1431720489 in words is "one billion, four hundred thirty-one million, seven hundred twenty thousand, four hundred eighty-nine".