231640530446 has 8 divisors (see below), whose sum is σ = 374188549224. Its totient is φ = 106911014040.

The previous prime is 231640530419. The next prime is 231640530481. The reversal of 231640530446 is 644035046132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4454625560 + ... + 4454625611.

It is an arithmetic number, because the mean of its divisors is an integer number (46773568653).

Almost surely, 2^231640530446 is an apocalyptic number.

231640530446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

231640530446 is a deficient number, since it is larger than the sum of its proper divisors (142548018778).

231640530446 is a wasteful number, since it uses less digits than its factorization.

231640530446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8909251186.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 231640530446 its reverse (644035046132), we get a palindrome (875675576578).

The spelling of 231640530446 in words is "two hundred thirty-one billion, six hundred forty million, five hundred thirty thousand, four hundred forty-six".