231000340 has 48 divisors (see below), whose sum is σ = 496762560. Its totient is φ = 90201600.

The previous prime is 231000323. The next prime is 231000353. The reversal of 231000340 is 43000132.

It is a super-2 number, since 2×231000340² = 106722314160231200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231000340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191740 + ... + 192940.

It is an arithmetic number, because the mean of its divisors is an integer number (10349220).

Almost surely, 2^231000340 is an apocalyptic number.

231000340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231000340 is an abundant number, since it is smaller than the sum of its proper divisors (265762220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231000340 is a wasteful number, since it uses less digits than its factorization.

231000340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 231000340 is about 15198.6953387454. The cubic root of 231000340 is about 613.5795450006.

Adding to 231000340 its reverse (43000132), we get a palindrome (274000472).

The spelling of 231000340 in words is "two hundred thirty-one million, three hundred forty", and thus it is an aban number.