131217004 has 12 divisors (see below), whose sum is σ = 230525064. Its totient is φ = 65352704.

The previous prime is 131216993. The next prime is 131217049. The reversal of 131217004 is 400712131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62794 + ... + 64849.

It is an arithmetic number, because the mean of its divisors is an integer number (19210422).

Almost surely, 2^131217004 is an apocalyptic number.

It is an amenable number.

131217004 is a deficient number, since it is larger than the sum of its proper divisors (99308060).

131217004 is a wasteful number, since it uses less digits than its factorization.

131217004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127904 (or 127902 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 131217004 is about 11454.9990833697. Note that the first 3 decimals coincide. The cubic root of 131217004 is about 508.1555881535.

Adding to 131217004 its reverse (400712131), we get a palindrome (531929135).

The spelling of 131217004 in words is "one hundred thirty-one million, two hundred seventeen thousand, four".