231434780 has 24 divisors (see below), whose sum is σ = 486302208. Its totient is φ = 92518848.

The previous prime is 231434759. The next prime is 231434789. The reversal of 231434780 is 87434132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231434789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56357 + ... + 60323.

It is an arithmetic number, because the mean of its divisors is an integer number (20262592).

Almost surely, 2^231434780 is an apocalyptic number.

231434780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231434780 is an abundant number, since it is smaller than the sum of its proper divisors (254867428).

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

231434780 is a wasteful number, since it uses less digits than its factorization.

231434780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893 (or 6891 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 231434780 is about 15212.9806415442. The cubic root of 231434780 is about 613.9639550613.

The spelling of 231434780 in words is "two hundred thirty-one million, four hundred thirty-four thousand, seven hundred eighty".