320203312103031 has 64 divisors (see below), whose sum is σ = 495452388372480. Its totient is φ = 180166840439040.

The previous prime is 320203312103011. The next prime is 320203312103041. The reversal of 320203312103031 is 130301213302023.

It is not a de Polignac number, because 320203312103031 - 2¹⁵ = 320203312070263 is a prime.

It is a super-2 number, since 2×320203312103031² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320203312102992 and 320203312103010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320203312103011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4483913716 + ... + 4483985126.

It is an arithmetic number, because the mean of its divisors is an integer number (7741443568320).

Almost surely, 2^{320203312103031} is an apocalyptic number.

320203312103031 is a deficient number, since it is larger than the sum of its proper divisors (175249076269449).

320203312103031 is a wasteful number, since it uses less digits than its factorization.

320203312103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80036.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 320203312103031 its reverse (130301213302023), we get a palindrome (450504525405054).

The spelling of 320203312103031 in words is "three hundred twenty trillion, two hundred three billion, three hundred twelve million, one hundred three thousand, thirty-one".