231404130 has 48 divisors (see below), whose sum is σ = 607631544. Its totient is φ = 61094400.

The previous prime is 231404099. The next prime is 231404141. The reversal of 231404130 is 31404132.

231404130 is a `hidden beast` number, since 231 + 404 + 1 + 30 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 180552969 + 50851161 = 13437^2 + 7131^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 3639 + ... + 21818.

Almost surely, 2^231404130 is an apocalyptic number.

231404130 is an abundant number, since it is smaller than the sum of its proper divisors (376227414).

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

231404130 is a wasteful number, since it uses less digits than its factorization.

231404130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25571 (or 25568 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231404130 is about 15211.9732447832. The cubic root of 231404130 is about 613.9368504835.

Adding to 231404130 its reverse (31404132), we get a palindrome (262808262).

The spelling of 231404130 in words is "two hundred thirty-one million, four hundred four thousand, one hundred thirty".