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31435003443 = 3109223431083
BaseRepresentation
bin11101010001101011…
…000001011000110011
310000010202111122000210
4131101223001120303
51003334330102233
622235133115203
72161663056234
oct352153013063
9100122448023
1031435003443
1112371270398
126113628b03
132c6c77b06c
141742c6d08b
15c3ead5163
hex751ac1633

31435003443 has 16 divisors (see below), whose sum is σ = 42487639040. Its totient is φ = 20671244064.

The previous prime is 31435003427. The next prime is 31435003477. The reversal of 31435003443 is 34430053413.

It is not a de Polignac number, because 31435003443 - 24 = 31435003427 is a prime.

It is a super-3 number, since 3×314350034433 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31435003443.

It is not an unprimeable number, because it can be changed into a prime (31435003643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142621 + ... + 288462.

It is an arithmetic number, because the mean of its divisors is an integer number (2655477440).

Almost surely, 231435003443 is an apocalyptic number.

31435003443 is a deficient number, since it is larger than the sum of its proper divisors (11052635597).

31435003443 is a wasteful number, since it uses less digits than its factorization.

31435003443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431418.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 31435003443 its reverse (34430053413), we get a palindrome (65865056856).

The spelling of 31435003443 in words is "thirty-one billion, four hundred thirty-five million, three thousand, four hundred forty-three".

Divisors: 1 3 109 223 327 669 24307 72921 431083 1293249 46988047 96131509 140964141 288394527 10478334481 31435003443