231246620 has 48 divisors (see below), whose sum is σ = 530990208. Its totient is φ = 83895360.

The previous prime is 231246611. The next prime is 231246629. The reversal of 231246620 is 26642132.

It is an interprime number because it is at equal distance from previous prime (231246611) and next prime (231246629).

It is a super-2 number, since 2×231246620² = 106949998522848800, 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 231246620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231246629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122927 + ... + 124793.

It is an arithmetic number, because the mean of its divisors is an integer number (11062296).

Almost surely, 2^231246620 is an apocalyptic number.

231246620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231246620 is an abundant number, since it is smaller than the sum of its proper divisors (299743588).

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

231246620 is a wasteful number, since it uses less digits than its factorization.

231246620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450 (or 2448 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 231246620 is about 15206.7951916240. The cubic root of 231246620 is about 613.7975226012.

Adding to 231246620 its reverse (26642132), we get a palindrome (257888752).

The spelling of 231246620 in words is "two hundred thirty-one million, two hundred forty-six thousand, six hundred twenty".