231140030 has 32 divisors (see below), whose sum is σ = 468523008. Its totient is φ = 81338400.

The previous prime is 231140027. The next prime is 231140033. The reversal of 231140030 is 30041132.

It is an interprime number because it is at equal distance from previous prime (231140027) and next prime (231140033).

It is a junction number, because it is equal to n+sod(n) for n = 231139987 and 231140014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231140033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30482 + ... + 37301.

It is an arithmetic number, because the mean of its divisors is an integer number (14641344).

Almost surely, 2^231140030 is an apocalyptic number.

231140030 is an abundant number, since it is smaller than the sum of its proper divisors (237382978).

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

231140030 is a wasteful number, since it uses less digits than its factorization.

231140030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67832.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231140030 is about 15203.2901044478. The cubic root of 231140030 is about 613.7032008871.

Adding to 231140030 its reverse (30041132), we get a palindrome (261181162).

The spelling of 231140030 in words is "two hundred thirty-one million, one hundred forty thousand, thirty".