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31092909349 = 793191123341
BaseRepresentation
bin11100111101010010…
…000010010100100101
32222020220210110011011
4130331102002110211
51002134241044344
622141152542221
72150340240325
oct347522022445
988226713134
1031092909349
1112206155aa7
126038b51971
132c16932518
14170d65d285
15c1ea5dd34
hex73d482525

31092909349 has 8 divisors (see below), whose sum is σ = 31496613120. Its totient is φ = 30689458800.

The previous prime is 31092909313. The next prime is 31092909377. The reversal of 31092909349 is 94390929013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31092909349 - 213 = 31092901157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31092909649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190419 + ... + 313759.

It is an arithmetic number, because the mean of its divisors is an integer number (3937076640).

Almost surely, 231092909349 is an apocalyptic number.

It is an amenable number.

31092909349 is a deficient number, since it is larger than the sum of its proper divisors (403703771).

31092909349 is a wasteful number, since it uses less digits than its factorization.

31092909349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126611.

The product of its (nonzero) digits is 472392, while the sum is 49.

The spelling of 31092909349 in words is "thirty-one billion, ninety-two million, nine hundred nine thousand, three hundred forty-nine".

Divisors: 1 79 3191 123341 252089 9743939 393581131 31092909349