231340323031 has 8 divisors (see below), whose sum is σ = 237601209200. Its totient is φ = 225079881408.

The previous prime is 231340323029. The next prime is 231340323061. The reversal of 231340323031 is 130323043132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231340323031 - 2¹ = 231340323029 is a prime.

It is a super-2 number, since 2×231340323031² (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 = 231340322987 and 231340323005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231340323061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128220 + ... + 1317406.

It is an arithmetic number, because the mean of its divisors is an integer number (29700151150).

Almost surely, 2^231340323031 is an apocalyptic number.

231340323031 is a deficient number, since it is larger than the sum of its proper divisors (6260886169).

231340323031 is a wasteful number, since it uses less digits than its factorization.

231340323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222273.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 231340323031 its reverse (130323043132), we get a palindrome (361663366163).

The spelling of 231340323031 in words is "two hundred thirty-one billion, three hundred forty million, three hundred twenty-three thousand, thirty-one".