234427347021 has 16 divisors (see below), whose sum is σ = 358704883328.
Its totient is φ = 133402636800.
The previous prime is 234427347013. The next prime is 234427347041. The reversal of 234427347021 is 120743724432.
It is not a de Polignac number, because 234427347021 - 23 = 234427347013 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (234427347041) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23155120 + ... + 23165241.
It is an arithmetic number, because the mean of its divisors is an integer number (22419055208).
Almost surely, 2234427347021 is an apocalyptic number.
234427347021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
It is an amenable number.
234427347021 is a deficient number, since it is larger than the sum of its proper divisors (124277536307).
234427347021 is a wasteful number, since it uses less digits than its factorization.
234427347021 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 46320612.
The product of its (nonzero) digits is 225792, while the sum is 39.
The spelling of 234427347021 in words is "two hundred thirty-four billion, four hundred twenty-seven million, three hundred forty-seven thousand, twenty-one".