231243401130 has 32 divisors (see below), whose sum is σ = 634267615104. Its totient is φ = 52855634496.

The previous prime is 231243401101. The next prime is 231243401131. The reversal of 231243401130 is 31104342132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231243401130.

It is not an unprimeable number, because it can be changed into a prime (231243401131) 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, 550579317 + ... + 550579736.

It is an arithmetic number, because the mean of its divisors is an integer number (19820862972).

Almost surely, 2^231243401130 is an apocalyptic number.

231243401130 is an abundant number, since it is smaller than the sum of its proper divisors (403024213974).

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

231243401130 is a wasteful number, since it uses less digits than its factorization.

231243401130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101159070.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 231243401130 its reverse (31104342132), we get a palindrome (262347743262).

The spelling of 231243401130 in words is "two hundred thirty-one billion, two hundred forty-three million, four hundred one thousand, one hundred thirty".