1431899323 has 2 divisors, whose sum is σ = 1431899324. Its totient is φ = 1431899322.

The previous prime is 1431899309. The next prime is 1431899333. The reversal of 1431899323 is 3239981341.

It is a strong prime.

It is an emirp because it is prime and its reverse (3239981341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1431899323 - 2²⁵ = 1398344891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1431899323.

It is not a weakly prime, because it can be changed into another prime (1431899333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715949661 + 715949662.

It is an arithmetic number, because the mean of its divisors is an integer number (715949662).

Almost surely, 2^1431899323 is an apocalyptic number.

1431899323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431899323 is an equidigital number, since it uses as much as digits as its factorization.

1431899323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 1431899323 is about 37840.4455972707. The cubic root of 1431899323 is about 1127.1217435097.

The spelling of 1431899323 in words is "one billion, four hundred thirty-one million, eight hundred ninety-nine thousand, three hundred twenty-three".