231498 has 20 divisors (see below), whose sum is σ = 519090. Its totient is φ = 77112.

The previous prime is 231493. The next prime is 231503. The reversal of 231498 is 894132.

It is an interprime number because it is at equal distance from previous prime (231493) and next prime (231503).

It can be written as a sum of positive squares in only one way, i.e., 227529 + 3969 = 477^2 + 63^2 .

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

It is not an unprimeable number, because it can be changed into a prime (231493) by changing a digit.

231498 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 553 + ... + 876.

2²³¹⁴⁹⁸ is an apocalyptic number.

231498 is an abundant number, since it is smaller than the sum of its proper divisors (287592).

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

231498 is a wasteful number, since it uses less digits than its factorization.

231498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443 (or 1434 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 231498 is about 481.1423905665. The cubic root of 231498 is about 61.4019854564.

It can be divided in two parts, 231 and 498, that added together give a 6-th power (729 = 3⁶).

The spelling of 231498 in words is "two hundred thirty-one thousand, four hundred ninety-eight".