331231001131 has 16 divisors (see below), whose sum is σ = 335491632000. Its totient is φ = 326993748928.

The previous prime is 331231001063. The next prime is 331231001137. The reversal of 331231001131 is 131100132133.

It is a cyclic number.

It is not a de Polignac number, because 331231001131 - 2²⁹ = 330694130219 is a prime.

It is a super-2 number, since 2×331231001131² (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 = 331231001099 and 331231001108.

It is not an unprimeable number, because it can be changed into a prime (331231001137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47026296 + ... + 47033338.

It is an arithmetic number, because the mean of its divisors is an integer number (20968227000).

Almost surely, 2^331231001131 is an apocalyptic number.

331231001131 is a deficient number, since it is larger than the sum of its proper divisors (4260630869).

331231001131 is a wasteful number, since it uses less digits than its factorization.

331231001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8618.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 331231001131 its reverse (131100132133), we get a palindrome (462331133264).

The spelling of 331231001131 in words is "three hundred thirty-one billion, two hundred thirty-one million, one thousand, one hundred thirty-one".