231020000331 has 4 divisors (see below), whose sum is σ = 308026667112. Its totient is φ = 154013333552.

The previous prime is 231020000317. The next prime is 231020000339. The reversal of 231020000331 is 133000020132.

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

It is a cyclic number.

It is not a de Polignac number, because 231020000331 - 2⁷ = 231020000203 is a prime.

It is a super-2 number, since 2×231020000331² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231020000331.

It is not an unprimeable number, because it can be changed into a prime (231020000339) 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, 38503333386 + ... + 38503333391.

It is an arithmetic number, because the mean of its divisors is an integer number (77006666778).

Almost surely, 2^231020000331 is an apocalyptic number.

231020000331 is a deficient number, since it is larger than the sum of its proper divisors (77006666781).

231020000331 is an equidigital number, since it uses as much as digits as its factorization.

231020000331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77006666780.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 231020000331 its reverse (133000020132), we get a palindrome (364020020463).

The spelling of 231020000331 in words is "two hundred thirty-one billion, twenty million, three hundred thirty-one", and thus it is an aban number.