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100007431 = 198959141
BaseRepresentation
bin1011111010111…
…11111000000111
320222011220101221
411331133320013
5201100214211
613531301211
72323022566
oct575377007
9228156357
10100007431
11514a7077
12295aa807
1317946cc4
14d3d3bdd
158ba6c71
hex5f5fe07

100007431 has 8 divisors (see below), whose sum is σ = 106455600. Its totient is φ = 93677760.

The previous prime is 100007423. The next prime is 100007461. The reversal of 100007431 is 134700001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100007431 - 23 = 100007423 is a prime.

It is a super-2 number, since 2×1000074312 = 20002972510439522, which 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 (100007461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27880 + ... + 31261.

It is an arithmetic number, because the mean of its divisors is an integer number (13306950).

Almost surely, 2100007431 is an apocalyptic number.

100007431 is a deficient number, since it is larger than the sum of its proper divisors (6448169).

100007431 is an equidigital number, since it uses as much as digits as its factorization.

100007431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59249.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 100007431 is about 10000.3715430978. The cubic root of 100007431 is about 464.1703802920.

Adding to 100007431 its reverse (134700001), we get a palindrome (234707432).

The spelling of 100007431 in words is "one hundred million, seven thousand, four hundred thirty-one".

Divisors: 1 19 89 1691 59141 1123679 5263549 100007431