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31279248001 = 163809237203
BaseRepresentation
bin11101001000011000…
…110111001010000001
32222201220102102201201
4131020120313022001
51003024441414001
622211450501201
72155062135601
oct351030671201
988656372651
1031279248001
11122a1357a91
12608b434801
132c46415591
14172a2c6c01
15c310ba501
hex748637281

31279248001 has 8 divisors (see below), whose sum is σ = 31510179360. Its totient is φ = 31048792992.

The previous prime is 31279247981. The next prime is 31279248017. The reversal of 31279248001 is 10084297213.

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 31279248001 - 213 = 31279239809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31279240001) 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, 13266 + ... + 250468.

It is an arithmetic number, because the mean of its divisors is an integer number (3938772420).

Almost surely, 231279248001 is an apocalyptic number.

It is an amenable number.

31279248001 is a deficient number, since it is larger than the sum of its proper divisors (230931359).

31279248001 is a wasteful number, since it uses less digits than its factorization.

31279248001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238175.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 31279248001 in words is "thirty-one billion, two hundred seventy-nine million, two hundred forty-eight thousand, one".

Divisors: 1 163 809 131867 237203 38664089 191897227 31279248001