231053420 has 72 divisors (see below), whose sum is σ = 529596144. Its totient is φ = 84634368.

The previous prime is 231053413. The next prime is 231053441. The reversal of 231053420 is 24350132.

It is a happy number.

231053420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 231053392 and 231053401.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 665687 + ... + 666033.

It is an arithmetic number, because the mean of its divisors is an integer number (7355502).

Almost surely, 2^231053420 is an apocalyptic number.

231053420 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 231053420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264798072).

231053420 is an abundant number, since it is smaller than the sum of its proper divisors (298542724).

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

231053420 is a wasteful number, since it uses less digits than its factorization.

231053420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 231053420 is about 15200.4414409582. The cubic root of 231053420 is about 613.6265381608.

The spelling of 231053420 in words is "two hundred thirty-one million, fifty-three thousand, four hundred twenty".