319631434 has 4 divisors (see below), whose sum is σ = 479447154. Its totient is φ = 159815716.

The previous prime is 319631407. The next prime is 319631453. The reversal of 319631434 is 434136913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 205205625 + 114425809 = 14325^2 + 10697^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 319631434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79907857 + ... + 79907860.

Almost surely, 2^319631434 is an apocalyptic number.

319631434 is a deficient number, since it is larger than the sum of its proper divisors (159815720).

319631434 is a wasteful number, since it uses less digits than its factorization.

319631434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159815719.

The product of its digits is 23328, while the sum is 34.

The square root of 319631434 is about 17878.2391191079. The cubic root of 319631434 is about 683.7276782070.

The spelling of 319631434 in words is "three hundred nineteen million, six hundred thirty-one thousand, four hundred thirty-four".