320691141 has 6 divisors (see below), whose sum is σ = 463220550. Its totient is φ = 213794088.

The previous prime is 320691113. The next prime is 320691143. The reversal of 320691141 is 141196023.

It can be written as a sum of positive squares in only one way, i.e., 293128641 + 27562500 = 17121^2 + 5250^2 .

It is not a de Polignac number, because 320691141 - 2⁵ = 320691109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320691143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17816166 + ... + 17816183.

It is an arithmetic number, because the mean of its divisors is an integer number (77203425).

Almost surely, 2^320691141 is an apocalyptic number.

It is an amenable number.

320691141 is a deficient number, since it is larger than the sum of its proper divisors (142529409).

320691141 is a wasteful number, since it uses less digits than its factorization.

320691141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35632355 (or 35632352 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 320691141 is about 17907.8513786551. The cubic root of 320691141 is about 684.4824556111.

The spelling of 320691141 in words is "three hundred twenty million, six hundred ninety-one thousand, one hundred forty-one".