231240134334 has 64 divisors (see below), whose sum is σ = 533397600000. Its totient is φ = 66094755840.

The previous prime is 231240134291. The next prime is 231240134339. The reversal of 231240134334 is 433431042132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231240134339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115459 + ... + 689790.

It is an arithmetic number, because the mean of its divisors is an integer number (8334337500).

Almost surely, 2^231240134334 is an apocalyptic number.

231240134334 is an abundant number, since it is smaller than the sum of its proper divisors (302157465666).

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

231240134334 is a wasteful number, since it uses less digits than its factorization.

231240134334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805513.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 231240134334 its reverse (433431042132), we get a palindrome (664671176466).

The spelling of 231240134334 in words is "two hundred thirty-one billion, two hundred forty million, one hundred thirty-four thousand, three hundred thirty-four".