100001231247 has 32 divisors (see below), whose sum is σ = 137477894400. Its totient is φ = 64620541440.

The previous prime is 100001231233. The next prime is 100001231249. The reversal of 100001231247 is 742132100001.

It is a de Polignac number, because none of the positive numbers 2^k-100001231247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001231249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32039847 + ... + 32042967.

It is an arithmetic number, because the mean of its divisors is an integer number (4296184200).

Almost surely, 2^100001231247 is an apocalyptic number.

100001231247 is a deficient number, since it is larger than the sum of its proper divisors (37476663153).

100001231247 is a wasteful number, since it uses less digits than its factorization.

100001231247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4983.

The product of its (nonzero) digits is 336, while the sum is 21.

Adding to 100001231247 its reverse (742132100001), we get a palindrome (842133331248).

The spelling of 100001231247 in words is "one hundred billion, one million, two hundred thirty-one thousand, two hundred forty-seven".