319148530997 has 4 divisors (see below), whose sum is σ = 320168175180. Its totient is φ = 318128886816.

The previous prime is 319148530963. The next prime is 319148531003. The reversal of 319148530997 is 799035841913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799035841913 = 199 ⋅4015255487.

It can be written as a sum of positive squares in 2 ways, for example, as 165714940561 + 153433590436 = 407081^2 + 391706^2 .

It is a cyclic number.

It is not a de Polignac number, because 319148530997 - 2⁶ = 319148530933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319148530097) 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, 509821622 + ... + 509822247.

It is an arithmetic number, because the mean of its divisors is an integer number (80042043795).

Almost surely, 2^319148530997 is an apocalyptic number.

It is an amenable number.

319148530997 is a deficient number, since it is larger than the sum of its proper divisors (1019644183).

319148530997 is a wasteful number, since it uses less digits than its factorization.

319148530997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019644182.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 319148530997 in words is "three hundred nineteen billion, one hundred forty-eight million, five hundred thirty thousand, nine hundred ninety-seven".