1531630230 has 32 divisors (see below), whose sum is σ = 3958676064. Its totient is φ = 377016576.

The previous prime is 1531630193. The next prime is 1531630253. The reversal of 1531630230 is 320361351.

It is a happy number.

It is a super-2 number, since 2×1531630230² = 4691782322899705800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1531630230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1963239 + ... + 1964018.

It is an arithmetic number, because the mean of its divisors is an integer number (123708627).

Almost surely, 2^1531630230 is an apocalyptic number.

1531630230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1531630230 is an abundant number, since it is smaller than the sum of its proper divisors (2427045834).

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

1531630230 is a wasteful number, since it uses less digits than its factorization.

1531630230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927280.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 1531630230 is about 39136.0477054084. The cubic root of 1531630230 is about 1152.7044679050.

Adding to 1531630230 its reverse (320361351), we get a palindrome (1851991581).

The spelling of 1531630230 in words is "one billion, five hundred thirty-one million, six hundred thirty thousand, two hundred thirty".