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131012312430 = 2354367077081
BaseRepresentation
bin111101000000011110…
…0010011110101101110
3110112011110210001012210
41322000330103311232
54121303122444210
6140104120311250
712315415165356
oct1720074236556
9415143701183
10131012312430
115062004247a
1221483912526
13c47b832c7c
1464abaddb66
15361bb77e20
hex1e80f13d6e

131012312430 has 16 divisors (see below), whose sum is σ = 314429549904. Its totient is φ = 34936616640.

The previous prime is 131012312411. The next prime is 131012312513. The reversal of 131012312430 is 34213210131.

It is a junction number, because it is equal to n+sod(n) for n = 131012312397 and 131012312406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2183538511 + ... + 2183538570.

It is an arithmetic number, because the mean of its divisors is an integer number (19651846869).

Almost surely, 2131012312430 is an apocalyptic number.

131012312430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131012312430 is an abundant number, since it is smaller than the sum of its proper divisors (183417237474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131012312430 is a wasteful number, since it uses less digits than its factorization.

131012312430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367077091.

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

Adding to 131012312430 its reverse (34213210131), we get a palindrome (165225522561).

The spelling of 131012312430 in words is "one hundred thirty-one billion, twelve million, three hundred twelve thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 4367077081 8734154162 13101231243 21835385405 26202462486 43670770810 65506156215 131012312430