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1310420031 = 35923930977
BaseRepresentation
bin100111000011011…
…0110110000111111
310101022210020100020
41032012312300333
510140431420111
6334010503223
744321246364
oct11606666077
93338706306
101310420031
11612774a68
12306a34b13
1317b645a8b
14c607446b
157a09c906
hex4e1b6c3f

1310420031 has 16 divisors (see below), whose sum is σ = 1784332800. Its totient is φ = 855185408.

The previous prime is 1310419997. The next prime is 1310420039. The reversal of 1310420031 is 1300240131.

It is a cyclic number.

It is not a de Polignac number, because 1310420031 - 215 = 1310387263 is a prime.

It is a super-2 number, since 2×13104200312 = 3434401315292081922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310420039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26815 + ... + 57791.

It is an arithmetic number, because the mean of its divisors is an integer number (111520800).

Almost surely, 21310420031 is an apocalyptic number.

1310420031 is a deficient number, since it is larger than the sum of its proper divisors (473912769).

1310420031 is a wasteful number, since it uses less digits than its factorization.

1310420031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31278.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1310420031 is about 36199.7241840321. The cubic root of 1310420031 is about 1094.3011132120.

Adding to 1310420031 its reverse (1300240131), we get a palindrome (2610660162).

The spelling of 1310420031 in words is "one billion, three hundred ten million, four hundred twenty thousand, thirty-one".

Divisors: 1 3 59 177 239 717 14101 30977 42303 92931 1827643 5482929 7403503 22210509 436806677 1310420031