1055431230 has 128 divisors (see below), whose sum is σ = 3080954880. Its totient is φ = 225884160.

The previous prime is 1055431207. The next prime is 1055431271. The reversal of 1055431230 is 321345501.

It is a super-2 number, since 2×1055431230² = 2227870162518625800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055431230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 816885 + ... + 818175.

It is an arithmetic number, because the mean of its divisors is an integer number (24069960).

Almost surely, 2^1055431230 is an apocalyptic number.

1055431230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055431230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1540477440).

1055431230 is an abundant number, since it is smaller than the sum of its proper divisors (2025523650).

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

1055431230 is a wasteful number, since it uses less digits than its factorization.

1055431230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1055431230 is about 32487.4010964251. The cubic root of 1055431230 is about 1018.1458144567.

Adding to 1055431230 its reverse (321345501), we get a palindrome (1376776731).

The spelling of 1055431230 in words is "one billion, fifty-five million, four hundred thirty-one thousand, two hundred thirty".