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1342143031 = 2081644951
BaseRepresentation
bin100111111111111…
…0111101000110111
310110112110221010011
41033333313220313
510222042034111
6341102441051
745155012305
oct11777675067
93415427104
101342143031
11629671a19
12315593187
131850a2098
14ca371275
157cc67021
hex4fff7a37

1342143031 has 4 divisors (see below), whose sum is σ = 1342790064. Its totient is φ = 1341496000.

The previous prime is 1342143017. The next prime is 1342143043. The reversal of 1342143031 is 1303412431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1342143031 - 25 = 1342142999 is a prime.

It is a super-2 number, since 2×13421430312 = 3602695831323733922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1342142993 and 1342143011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342143091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320395 + ... + 324556.

It is an arithmetic number, because the mean of its divisors is an integer number (335697516).

Almost surely, 21342143031 is an apocalyptic number.

1342143031 is a deficient number, since it is larger than the sum of its proper divisors (647033).

1342143031 is an equidigital number, since it uses as much as digits as its factorization.

1342143031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647032.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1342143031 is about 36635.2703142750. The cubic root of 1342143031 is about 1103.0611786846.

Adding to 1342143031 its reverse (1303412431), we get a palindrome (2645555462).

The spelling of 1342143031 in words is "one billion, three hundred forty-two million, one hundred forty-three thousand, thirty-one".

Divisors: 1 2081 644951 1342143031