100115245431 has 16 divisors (see below), whose sum is σ = 148334302720. Its totient is φ = 66736557720.

The previous prime is 100115245429. The next prime is 100115245459. The reversal of 100115245431 is 134542511001.

100115245431 is a `hidden beast` number, since 1 + 0 + 0 + 115 + 2 + 4 + 543 + 1 = 666.

It is not a de Polignac number, because 100115245431 - 2¹ = 100115245429 is a prime.

It is a super-2 number, since 2×100115245431² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100115245395 and 100115245404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100115245421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78696 + ... + 454338.

It is an arithmetic number, because the mean of its divisors is an integer number (9270893920).

Almost surely, 2^100115245431 is an apocalyptic number.

100115245431 is a deficient number, since it is larger than the sum of its proper divisors (48219057289).

100115245431 is an equidigital number, since it uses as much as digits as its factorization.

100115245431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385523 (or 385517 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 100115245431 its reverse (134542511001), we get a palindrome (234657756432).

The spelling of 100115245431 in words is "one hundred billion, one hundred fifteen million, two hundred forty-five thousand, four hundred thirty-one".