231217130 has 16 divisors (see below), whose sum is σ = 418747104. Its totient is φ = 91918800.

The previous prime is 231217123. The next prime is 231217211. The reversal of 231217130 is 31712132.

It is a super-2 number, since 2×231217130² = 106922722410873800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69296 + ... + 72555.

It is an arithmetic number, because the mean of its divisors is an integer number (26171694).

Almost surely, 2^231217130 is an apocalyptic number.

231217130 is a deficient number, since it is larger than the sum of its proper divisors (187529974).

231217130 is a wasteful number, since it uses less digits than its factorization.

231217130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142021.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 231217130 is about 15205.8255283954. The cubic root of 231217130 is about 613.7714297392.

Adding to 231217130 its reverse (31712132), we get a palindrome (262929262).

The spelling of 231217130 in words is "two hundred thirty-one million, two hundred seventeen thousand, one hundred thirty".