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13131024423 = 311331432467
BaseRepresentation
bin11000011101010101…
…11000100000100111
31020220010100011011220
430032222320200213
5203343020240143
610010551231423
7643253603016
oct141652704047
936803304156
1013131024423
115629137000
122665678573
13131358884a
148c7d14a7d
1551cbd3d83
hex30eab8827

13131024423 has 64 divisors (see below), whose sum is σ = 20349272064. Its totient is φ = 7519327200.

The previous prime is 13131024407. The next prime is 13131024427. The reversal of 13131024423 is 32442013131.

It is a happy number.

It is not a de Polignac number, because 13131024423 - 24 = 13131024407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13131024393 and 13131024402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131024427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5321436 + ... + 5323902.

It is an arithmetic number, because the mean of its divisors is an integer number (317957376).

Almost surely, 213131024423 is an apocalyptic number.

13131024423 is a deficient number, since it is larger than the sum of its proper divisors (7218247641).

13131024423 is a wasteful number, since it uses less digits than its factorization.

13131024423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13131024423 its reverse (32442013131), we get a palindrome (45573037554).

The spelling of 13131024423 in words is "thirteen billion, one hundred thirty-one million, twenty-four thousand, four hundred twenty-three".

Divisors: 1 3 11 31 33 43 93 121 129 341 363 473 1023 1331 1333 1419 2467 3751 3993 3999 5203 7401 11253 14663 15609 27137 41261 43989 57233 76477 81411 106081 123783 161293 171699 229431 298507 318243 483879 841247 895521 1166891 1774223 2523741 3283577 3288511 3500673 5322669 9253717 9850731 9865533 12835801 27761151 36173621 38507403 101790887 108520863 141193811 305372661 397909831 423581433 1193729493 4377008141 13131024423