290131230 has 32 divisors (see below), whose sum is σ = 696937248. Its totient is φ = 77299200.

The previous prime is 290131183. The next prime is 290131241. The reversal of 290131230 is 32131092.

It is a happy number.

It is a super-2 number, since 2×290131230² = 168352261242625800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 290131197 and 290131206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35970 + ... + 43290.

It is an arithmetic number, because the mean of its divisors is an integer number (21779289).

Almost surely, 2^290131230 is an apocalyptic number.

290131230 is an abundant number, since it is smaller than the sum of its proper divisors (406806018).

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

290131230 is a wasteful number, since it uses less digits than its factorization.

290131230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8652.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 290131230 is about 17033.2389756030. The cubic root of 290131230 is about 662.0104217318.

The spelling of 290131230 in words is "two hundred ninety million, one hundred thirty-one thousand, two hundred thirty".