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31430133241 = 1319210762591
BaseRepresentation
bin11101010001011000…
…011100010111111001
310000010102100012100221
4131101120130113321
51003332103230431
622234440500041
72161603503343
oct352130342771
9100112305327
1031430133241
1112369544331
126111a7a621
132c6b7643a0
141742362293
15c3e472111
hex75161c5f9

31430133241 has 24 divisors (see below), whose sum is σ = 36057498624. Its totient is φ = 27228152160.

The previous prime is 31430133227. The next prime is 31430133253. The reversal of 31430133241 is 14233103413.

It is not a de Polignac number, because 31430133241 - 27 = 31430133113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31430133281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 470856 + ... + 533446.

It is an arithmetic number, because the mean of its divisors is an integer number (1502395776).

Almost surely, 231430133241 is an apocalyptic number.

It is an amenable number.

31430133241 is a deficient number, since it is larger than the sum of its proper divisors (4627365383).

31430133241 is a wasteful number, since it uses less digits than its factorization.

31430133241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62749 (or 62730 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31430133241 its reverse (14233103413), we get a palindrome (45663236654).

The spelling of 31430133241 in words is "thirty-one billion, four hundred thirty million, one hundred thirty-three thousand, two hundred forty-one".

Divisors: 1 13 19 107 247 361 1391 2033 4693 26429 38627 62591 502151 813683 1189229 6697237 15459977 22595351 87064081 127247503 293739563 1654217539 2417702557 31430133241