320145332351 has 24 divisors (see below), whose sum is σ = 359203014000. Its totient is φ = 284864815872.

The previous prime is 320145332347. The next prime is 320145332393. The reversal of 320145332351 is 153233541023.

It is not a de Polignac number, because 320145332351 - 2² = 320145332347 is a prime.

It is a super-2 number, since 2×320145332351² (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 (320145332321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2980955 + ... + 3086483.

It is an arithmetic number, because the mean of its divisors is an integer number (14966792250).

Almost surely, 2^320145332351 is an apocalyptic number.

320145332351 is a deficient number, since it is larger than the sum of its proper divisors (39057681649).

320145332351 is a wasteful number, since it uses less digits than its factorization.

320145332351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106203 (or 106190 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 320145332351 its reverse (153233541023), we get a palindrome (473378873374).

The spelling of 320145332351 in words is "three hundred twenty billion, one hundred forty-five million, three hundred thirty-two thousand, three hundred fifty-one".