231238260 has 144 divisors (see below), whose sum is σ = 790977600. Its totient is φ = 56041920.

The previous prime is 231238253. The next prime is 231238277. The reversal of 231238260 is 62832132.

231238260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231238260² = 106942265775655200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63571 + ... + 67109.

It is an arithmetic number, because the mean of its divisors is an integer number (5492900).

Almost surely, 2^231238260 is an apocalyptic number.

231238260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231238260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395488800).

231238260 is an abundant number, since it is smaller than the sum of its proper divisors (559739340).

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

231238260 is a wasteful number, since it uses less digits than its factorization.

231238260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579 (or 3560 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 231238260 is about 15206.5203120240. The cubic root of 231238260 is about 613.7901258673.

The spelling of 231238260 in words is "two hundred thirty-one million, two hundred thirty-eight thousand, two hundred sixty".