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13031410431 = 3132771206277
BaseRepresentation
bin11000010001011101…
…11000101011111111
31020122011220020110210
430020232320223333
5203142020113211
65553032203503
7640634106144
oct141056705377
936564806423
1013031410431
115587989596
122638239593
1312c8a4b960
148b89c43cb
155140a89a6
hex308bb8aff

13031410431 has 16 divisors (see below), whose sum is σ = 18779335904. Its totient is φ = 7990372224.

The previous prime is 13031410411. The next prime is 13031410489. The reversal of 13031410431 is 13401413031.

It is a de Polignac number, because none of the positive numbers 2k-13031410431 is a prime.

It is a super-2 number, since 2×130314104312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13031410398 and 13031410407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031410411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592336 + ... + 613941.

It is an arithmetic number, because the mean of its divisors is an integer number (1173708494).

Almost surely, 213031410431 is an apocalyptic number.

13031410431 is a deficient number, since it is larger than the sum of its proper divisors (5747925473).

13031410431 is a wasteful number, since it uses less digits than its factorization.

13031410431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206570.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13031410431 its reverse (13401413031), we get a palindrome (26432823462).

The spelling of 13031410431 in words is "thirteen billion, thirty-one million, four hundred ten thousand, four hundred thirty-one".

Divisors: 1 3 13 39 277 831 3601 10803 1206277 3618831 15681601 47044803 334138729 1002416187 4343803477 13031410431