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12310400431 = 73594898687
BaseRepresentation
bin10110111011100000…
…11100110110101111
31011202221012010200201
423131300130312233
5200202430303211
65353314334331
7614030451160
oct133560346657
934687163621
1012310400431
11524799a05a
12247688a3a7
131212564514
1484ad3b767
154c0b360c1
hex2ddc1cdaf

12310400431 has 8 divisors (see below), whose sum is σ = 14108221440. Its totient is φ = 10522377528.

The previous prime is 12310400381. The next prime is 12310400467. The reversal of 12310400431 is 13400401321.

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 12310400431 - 27 = 12310400303 is a prime.

It is a super-3 number, since 3×123104004313 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12310400399 and 12310400408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310406431) 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, 2446831 + ... + 2451856.

It is an arithmetic number, because the mean of its divisors is an integer number (1763527680).

Almost surely, 212310400431 is an apocalyptic number.

12310400431 is a deficient number, since it is larger than the sum of its proper divisors (1797821009).

12310400431 is an equidigital number, since it uses as much as digits as its factorization.

12310400431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899053.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12310400431 its reverse (13400401321), we get a palindrome (25710801752).

The spelling of 12310400431 in words is "twelve billion, three hundred ten million, four hundred thousand, four hundred thirty-one".

Divisors: 1 7 359 2513 4898687 34290809 1758628633 12310400431