231200000311 has 16 divisors (see below), whose sum is σ = 278172751360. Its totient is φ = 187716100320.

The previous prime is 231200000303. The next prime is 231200000327. The reversal of 231200000311 is 113000002132.

It is not a de Polignac number, because 231200000311 - 2³ = 231200000303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231200000291 and 231200000300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231200000611) 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, 909301 + ... + 1135441.

It is an arithmetic number, because the mean of its divisors is an integer number (17385796960).

Almost surely, 2^231200000311 is an apocalyptic number.

231200000311 is a deficient number, since it is larger than the sum of its proper divisors (46972751049).

231200000311 is a wasteful number, since it uses less digits than its factorization.

231200000311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233854.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 231200000311 its reverse (113000002132), we get a palindrome (344200002443).

The spelling of 231200000311 in words is "two hundred thirty-one billion, two hundred million, three hundred eleven", and thus it is an aban number.