319238465087 has 4 divisors (see below), whose sum is σ = 319240441416. Its totient is φ = 319236488760.

The previous prime is 319238465083. The next prime is 319238465089. The reversal of 319238465087 is 780564832913.

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

It is a cyclic number.

It is not a de Polignac number, because 319238465087 - 2² = 319238465083 is a prime.

It is a super-2 number, since 2×319238465087² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319238465081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721964 + ... + 1076897.

It is an arithmetic number, because the mean of its divisors is an integer number (79810110354).

It is a 1-persistent number, because it is pandigital, but 2⋅319238465087 = 638476930174 is not.

Almost surely, 2^319238465087 is an apocalyptic number.

319238465087 is a deficient number, since it is larger than the sum of its proper divisors (1976329).

319238465087 is a wasteful number, since it uses less digits than its factorization.

319238465087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976328.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 319238465087 in words is "three hundred nineteen billion, two hundred thirty-eight million, four hundred sixty-five thousand, eighty-seven".