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31110119081 = 1011291238591
BaseRepresentation
bin11100111110010011…
…101011111010101001
32222022010011210110122
4130332103223322221
51002203142302311
622143005453025
72150636435426
oct347623537251
988263153418
1031110119081
111221493aa18
126042871175
132c1a3798b2
141711a5cd4d
15c2130d0db
hex73e4ebea9

31110119081 has 8 divisors (see below), whose sum is σ = 31442608128. Its totient is φ = 30778110000.

The previous prime is 31110119077. The next prime is 31110119101. The reversal of 31110119081 is 18091101113.

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 31110119081 - 22 = 31110119077 is a prime.

It is a super-2 number, since 2×311101190812 (a number of 22 digits) contains 22 as substring.

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 31110119081.

It is not an unprimeable number, because it can be changed into a prime (31110179081) 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, 11096 + ... + 249686.

It is an arithmetic number, because the mean of its divisors is an integer number (3930326016).

Almost surely, 231110119081 is an apocalyptic number.

It is an amenable number.

31110119081 is a deficient number, since it is larger than the sum of its proper divisors (332489047).

31110119081 is a wasteful number, since it uses less digits than its factorization.

31110119081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239983.

The product of its (nonzero) digits is 216, while the sum is 26.

The spelling of 31110119081 in words is "thirty-one billion, one hundred ten million, one hundred nineteen thousand, eighty-one".

Divisors: 1 101 1291 130391 238591 24097691 308020981 31110119081