231302999400 has 192 divisors, whose sum is σ = 782566341120. Its totient is φ = 56048966400.

The previous prime is 231302999377. The next prime is 231302999401. The reversal of 231302999400 is 4999203132.

It is not an unprimeable number, because it can be changed into a prime (231302999401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18493549 + ... + 18506051.

It is an arithmetic number, because the mean of its divisors is an integer number (4075866360).

Almost surely, 2^231302999400 is an apocalyptic number.

231302999400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231302999400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391283170560).

231302999400 is an abundant number, since it is smaller than the sum of its proper divisors (551263341720).

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

231302999400 is a wasteful number, since it uses less digits than its factorization.

231302999400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15336 (or 15327 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The spelling of 231302999400 in words is "two hundred thirty-one billion, three hundred two million, nine hundred ninety-nine thousand, four hundred".