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1355375031 = 31721563293
BaseRepresentation
bin101000011001001…
…0110000110110111
310111110101012000020
41100302112012313
510233434000111
6342254220223
745405332463
oct12062260667
93443335006
101355375031
1163608a35a
12319ab4673
13187a55a7a
14cc0174a3
157decc906
hex50c961b7

1355375031 has 12 divisors (see below), whose sum is σ = 1919725032. Its totient is φ = 850430848.

The previous prime is 1355375029. The next prime is 1355375033. The reversal of 1355375031 is 1305735531.

It is an interprime number because it is at equal distance from previous prime (1355375029) and next prime (1355375033).

It is not a de Polignac number, because 1355375031 - 21 = 1355375029 is a prime.

It is a super-2 number, since 2×13553750312 = 3674082949316501922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1355374983 and 1355375001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355375033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 780780 + ... + 782513.

It is an arithmetic number, because the mean of its divisors is an integer number (159977086).

Almost surely, 21355375031 is an apocalyptic number.

1355375031 is a deficient number, since it is larger than the sum of its proper divisors (564350001).

1355375031 is a wasteful number, since it uses less digits than its factorization.

1355375031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563330 (or 1563313 counting only the distinct ones).

The product of its (nonzero) digits is 23625, while the sum is 33.

The square root of 1355375031 is about 36815.4183868661. The cubic root of 1355375031 is about 1106.6743059766.

The spelling of 1355375031 in words is "one billion, three hundred fifty-five million, three hundred seventy-five thousand, thirty-one".

Divisors: 1 3 17 51 289 867 1563293 4689879 26575981 79727943 451791677 1355375031