320001312231031 has 32 divisors (see below), whose sum is σ = 344940522727680. Its totient is φ = 295882634073600.

The previous prime is 320001312231023. The next prime is 320001312231037. The reversal of 320001312231031 is 130132213100023.

It is not a de Polignac number, because 320001312231031 - 2³ = 320001312231023 is a prime.

It is a super-2 number, since 2×320001312231031² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320001312230993 and 320001312231011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320001312231037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17765011381 + ... + 17765029393.

It is an arithmetic number, because the mean of its divisors is an integer number (10779391335240).

Almost surely, 2^{320001312231031} is an apocalyptic number.

320001312231031 is a deficient number, since it is larger than the sum of its proper divisors (24939210496649).

320001312231031 is a wasteful number, since it uses less digits than its factorization.

320001312231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33487.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 320001312231031 its reverse (130132213100023), we get a palindrome (450133525331054).

The spelling of 320001312231031 in words is "three hundred twenty trillion, one billion, three hundred twelve million, two hundred thirty-one thousand, thirty-one".