1431684913 has 2 divisors, whose sum is σ = 1431684914. Its totient is φ = 1431684912.

The previous prime is 1431684911. The next prime is 1431684923. The reversal of 1431684913 is 3194861341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1427932944 + 3751969 = 37788^2 + 1937^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431684913 - 2¹ = 1431684911 is a prime.

It is a super-2 number, since 2×1431684913² = 4099443380223635138, which contains 22 as substring.

Together with 1431684911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1431684911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715842456 + 715842457.

It is an arithmetic number, because the mean of its divisors is an integer number (715842457).

Almost surely, 2^1431684913 is an apocalyptic number.

It is an amenable number.

1431684913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431684913 is an equidigital number, since it uses as much as digits as its factorization.

1431684913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 1431684913 is about 37837.6124114617. The cubic root of 1431684913 is about 1127.0654829816.

The spelling of 1431684913 in words is "one billion, four hundred thirty-one million, six hundred eighty-four thousand, nine hundred thirteen".