383531320331 has 4 divisors (see below), whose sum is σ = 400206595152. Its totient is φ = 366856045512.

The previous prime is 383531320321. The next prime is 383531320339. The reversal of 383531320331 is 133023135383.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-383531320331 is a prime.

It is a super-2 number, since 2×383531320331² (a number of 24 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 = 383531320291 and 383531320300.

It is not an unprimeable number, because it can be changed into a prime (383531320339) 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, 8337637376 + ... + 8337637421.

It is an arithmetic number, because the mean of its divisors is an integer number (100051648788).

Almost surely, 2^383531320331 is an apocalyptic number.

383531320331 is a deficient number, since it is larger than the sum of its proper divisors (16675274821).

383531320331 is a wasteful number, since it uses less digits than its factorization.

383531320331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16675274820.

The product of its (nonzero) digits is 58320, while the sum is 35.

The spelling of 383531320331 in words is "three hundred eighty-three billion, five hundred thirty-one million, three hundred twenty thousand, three hundred thirty-one".