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100312010431 = 635915774809
BaseRepresentation
bin101110101101100001…
…1111100111010111111
3100120220220202010002121
41131123003330322333
53120414333313211
6114025510303411
710150553006623
oct1353303747277
9316826663077
10100312010431
11395a6573166
1217536357b67
1395c83541b9
144bd867d183
15292181c271
hex175b0fcebf

100312010431 has 4 divisors (see below), whose sum is σ = 100327791600. Its totient is φ = 100296229264.

The previous prime is 100312010419. The next prime is 100312010467. The reversal of 100312010431 is 134010213001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100312010431 - 215 = 100311977663 is a prime.

It is a super-2 number, since 2×1003120104312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100312010131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7881046 + ... + 7893763.

It is an arithmetic number, because the mean of its divisors is an integer number (25081947900).

Almost surely, 2100312010431 is an apocalyptic number.

100312010431 is a deficient number, since it is larger than the sum of its proper divisors (15781169).

100312010431 is an equidigital number, since it uses as much as digits as its factorization.

100312010431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15781168.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 100312010431 its reverse (134010213001), we get a palindrome (234322223432).

The spelling of 100312010431 in words is "one hundred billion, three hundred twelve million, ten thousand, four hundred thirty-one".

Divisors: 1 6359 15774809 100312010431