231709930650 has 288 divisors, whose sum is σ = 690460557696. Its totient is φ = 55238400000.

The previous prime is 231709930601. The next prime is 231709930679. The reversal of 231709930650 is 56039907132.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 231709930596 and 231709930605.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 211220902 + ... + 211221998.

It is an arithmetic number, because the mean of its divisors is an integer number (2397432492).

Almost surely, 2^231709930650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231709930650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345230278848).

231709930650 is an abundant number, since it is smaller than the sum of its proper divisors (458750627046).

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

231709930650 is a wasteful number, since it uses less digits than its factorization.

231709930650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The spelling of 231709930650 in words is "two hundred thirty-one billion, seven hundred nine million, nine hundred thirty thousand, six hundred fifty".