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103038431 = 293351667
BaseRepresentation
bin1100010010000…
…11110111011111
321011212220011012
412021003313133
5202334212211
614120245435
72360545406
oct611036737
9234786135
10103038431
1153187331
122a61087b
13184687b2
14d98263d
1590a4d8b
hex6243ddf

103038431 has 4 divisors (see below), whose sum is σ = 103390392. Its totient is φ = 102686472.

The previous prime is 103038427. The next prime is 103038433. The reversal of 103038431 is 134830301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134830301 = 235862187.

It is a cyclic number.

It is not a de Polignac number, because 103038431 - 22 = 103038427 is a prime.

It is a super-2 number, since 2×1030384312 = 21233836525883522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103038397 and 103038406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103038433) 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, 175541 + ... + 176126.

It is an arithmetic number, because the mean of its divisors is an integer number (25847598).

Almost surely, 2103038431 is an apocalyptic number.

103038431 is a deficient number, since it is larger than the sum of its proper divisors (351961).

103038431 is an equidigital number, since it uses as much as digits as its factorization.

103038431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351960.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 103038431 is about 10150.7847479887. The cubic root of 103038431 is about 468.8131075687.

Adding to 103038431 its reverse (134830301), we get a palindrome (237868732).

The spelling of 103038431 in words is "one hundred three million, thirty-eight thousand, four hundred thirty-one".

Divisors: 1 293 351667 103038431