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1023154230431 = 61109153880919
BaseRepresentation
bin11101110001110001011…
…11101001010010011111
310121210221101012012110002
432320320233221102133
5113230404440333211
62102010334004515
7133630500315014
oct16707057512237
93553841165402
101023154230431
11364a0a986a23
1214636434673b
13756382a82c8
143774160170b
151b93438e03b
hexee38be949f

1023154230431 has 8 divisors (see below), whose sum is σ = 1049467874400. Its totient is φ = 997148348640.

The previous prime is 1023154230379. The next prime is 1023154230451. The reversal of 1023154230431 is 1340324513201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-1023154230431 is a prime.

It is a super-2 number, since 2×10231542304312 (a number of 25 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 = 1023154230394 and 1023154230403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023154230451) 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, 76933811 + ... + 76947108.

It is an arithmetic number, because the mean of its divisors is an integer number (131183484300).

Almost surely, 21023154230431 is an apocalyptic number.

1023154230431 is a deficient number, since it is larger than the sum of its proper divisors (26313643969).

1023154230431 is a wasteful number, since it uses less digits than its factorization.

1023154230431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153881089.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1023154230431 its reverse (1340324513201), we get a palindrome (2363478743632).

The spelling of 1023154230431 in words is "one trillion, twenty-three billion, one hundred fifty-four million, two hundred thirty thousand, four hundred thirty-one".

Divisors: 1 61 109 6649 153880919 9386736059 16773020171 1023154230431