231964780 has 12 divisors (see below), whose sum is σ = 487126080. Its totient is φ = 92785904.

The previous prime is 231964769. The next prime is 231964807. The reversal of 231964780 is 87469132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5799100 + ... + 5799139.

It is an arithmetic number, because the mean of its divisors is an integer number (40593840).

Almost surely, 2^231964780 is an apocalyptic number.

231964780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231964780 is an abundant number, since it is smaller than the sum of its proper divisors (255161300).

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

231964780 is a wasteful number, since it uses less digits than its factorization.

231964780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11598248 (or 11598246 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 231964780 is about 15230.3900147042. The cubic root of 231964780 is about 614.4322695985.

The spelling of 231964780 in words is "two hundred thirty-one million, nine hundred sixty-four thousand, seven hundred eighty".