1431431487 has 8 divisors (see below), whose sum is σ = 2120639280. Its totient is φ = 954287640.

The previous prime is 1431431453. The next prime is 1431431513. The reversal of 1431431487 is 7841341341.

1431431487 is a `hidden beast` number, since 143 + 1 + 4 + 31 + 487 = 666.

It is not a de Polignac number, because 1431431487 - 2⁶ = 1431431423 is a prime.

It is a super-2 number, since 2×1431431487² = 4097992203950062338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431431437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26507964 + ... + 26508017.

It is an arithmetic number, because the mean of its divisors is an integer number (265079910).

Almost surely, 2^1431431487 is an apocalyptic number.

1431431487 is a deficient number, since it is larger than the sum of its proper divisors (689207793).

1431431487 is an equidigital number, since it uses as much as digits as its factorization.

1431431487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53015990 (or 53015984 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1431431487 is about 37834.2633997280. The cubic root of 1431431487 is about 1126.9989775308.

The spelling of 1431431487 in words is "one billion, four hundred thirty-one million, four hundred thirty-one thousand, four hundred eighty-seven".