238230531 has 128 divisors (see below), whose sum is σ = 478617600. Its totient is φ = 113374080.

The previous prime is 238230529. The next prime is 238230547. The reversal of 238230531 is 135032832.

238230531 is a `hidden beast` number, since 23 + 82 + 30 + 531 = 666.

It is not a de Polignac number, because 238230531 - 2¹ = 238230529 is a prime.

It is a super-2 number, since 2×238230531² = 113507571801083922, which contains 22 as substring.

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

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 238230495 and 238230504.

It is not an unprimeable number, because it can be changed into a prime (238230511) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1461456 + ... + 1461618.

It is an arithmetic number, because the mean of its divisors is an integer number (3739200).

Almost surely, 2^238230531 is an apocalyptic number.

238230531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

238230531 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

238230531 is a wasteful number, since it uses less digits than its factorization.

238230531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 238230531 is about 15434.7183647775. The cubic root of 238230531 is about 619.9154680105.

The spelling of 238230531 in words is "two hundred thirty-eight million, two hundred thirty thousand, five hundred thirty-one".