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31148469085 = 513034781039
BaseRepresentation
bin11101000000100101…
…111110101101011101
32222101210100011210011
4131000211332231131
51002243002002320
622150455443221
72151613422136
oct350045765535
988353304704
1031148469085
1112234553938
126053686511
132c252b63c6
141716ba2c8d
15c2488605a
hex74097eb5d

31148469085 has 8 divisors (see below), whose sum is σ = 37406856960. Its totient is φ = 24899645904.

The previous prime is 31148469083. The next prime is 31148469091. The reversal of 31148469085 is 58096484113.

It is a happy number.

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 31148469085 - 21 = 31148469083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31148469083) 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, 2384005 + ... + 2397034.

It is an arithmetic number, because the mean of its divisors is an integer number (4675857120).

Almost surely, 231148469085 is an apocalyptic number.

It is an amenable number.

31148469085 is a deficient number, since it is larger than the sum of its proper divisors (6258387875).

31148469085 is a wasteful number, since it uses less digits than its factorization.

31148469085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782347.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 31148469085 in words is "thirty-one billion, one hundred forty-eight million, four hundred sixty-nine thousand, eighty-five".

Divisors: 1 5 1303 6515 4781039 23905195 6229693817 31148469085