1431677609 has 2 divisors, whose sum is σ = 1431677610. Its totient is φ = 1431677608.

The previous prime is 1431677591. The next prime is 1431677623. The reversal of 1431677609 is 9067761341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251178384 + 180499225 = 35372^2 + 13435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431677609 is a prime.

It is a super-2 number, since 2×1431677609² = 4099401552223913762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1431677609.

It is not a weakly prime, because it can be changed into another prime (1431677629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715838804 + 715838805.

It is an arithmetic number, because the mean of its divisors is an integer number (715838805).

Almost surely, 2^1431677609 is an apocalyptic number.

It is an amenable number.

1431677609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431677609 is an equidigital number, since it uses as much as digits as its factorization.

1431677609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 1431677609 is about 37837.5158936207. The cubic root of 1431677609 is about 1127.0635663354.

The spelling of 1431677609 in words is "one billion, four hundred thirty-one million, six hundred seventy-seven thousand, six hundred nine".