131217230 has 48 divisors (see below), whose sum is σ = 254013840. Its totient is φ = 48666240.

The previous prime is 131217227. The next prime is 131217253. The reversal of 131217230 is 32712131.

It is a super-2 number, since 2×131217230² = 34435922897745800, which contains 22 as substring.

It is a congruent number.

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, 957722 + ... + 957858.

It is an arithmetic number, because the mean of its divisors is an integer number (5291955).

Almost surely, 2^131217230 is an apocalyptic number.

131217230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131217230 is a deficient number, since it is larger than the sum of its proper divisors (122796610).

131217230 is a wasteful number, since it uses less digits than its factorization.

131217230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 234 counting only the distinct ones).

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

The square root of 131217230 is about 11455.0089480541. The cubic root of 131217230 is about 508.1558798919.

Adding to 131217230 its reverse (32712131), we get a palindrome (163929361).

The spelling of 131217230 in words is "one hundred thirty-one million, two hundred seventeen thousand, two hundred thirty".