231140140430 has 32 divisors (see below), whose sum is σ = 437454635040. Its totient is φ = 87804501120.

The previous prime is 231140140403. The next prime is 231140140447. The reversal of 231140140430 is 34041041132.

It is a junction number, because it is equal to n+sod(n) for n = 231140140396 and 231140140405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6515384 + ... + 6550763.

It is an arithmetic number, because the mean of its divisors is an integer number (13670457345).

Almost surely, 2^231140140430 is an apocalyptic number.

231140140430 is a deficient number, since it is larger than the sum of its proper divisors (206314494610).

231140140430 is a wasteful number, since it uses less digits than its factorization.

231140140430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13066244.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 231140140430 its reverse (34041041132), we get a palindrome (265181181562).

The spelling of 231140140430 in words is "two hundred thirty-one billion, one hundred forty million, one hundred forty thousand, four hundred thirty".