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31002234101 = 891009334513
BaseRepresentation
bin11100110111111000…
…001000110011110101
32222000121011200002122
4130313320020303311
51001443032442401
622124153245325
72145156433106
oct346770106365
988017150078
1031002234101
1112169a53383
126012703845
132c00c05127
1417015b83ad
15c16aec21b
hex737e08cf5

31002234101 has 8 divisors (see below), whose sum is σ = 31354588440. Its totient is φ = 30649969152.

The previous prime is 31002234073. The next prime is 31002234121. The reversal of 31002234101 is 10143220013.

It can be written as a sum of positive squares in 4 ways, for example, as 5894247076 + 25107987025 = 76774^2 + 158455^2 .

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 31002234101 - 226 = 30935125237 is a prime.

It is a super-2 number, since 2×310022341012 (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 31002234101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002234121) 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, 881021 + ... + 915533.

It is an arithmetic number, because the mean of its divisors is an integer number (3919323555).

Almost surely, 231002234101 is an apocalyptic number.

It is an amenable number.

31002234101 is a deficient number, since it is larger than the sum of its proper divisors (352354339).

31002234101 is a wasteful number, since it uses less digits than its factorization.

31002234101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44695.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31002234101 its reverse (10143220013), we get a palindrome (41145454114).

The spelling of 31002234101 in words is "thirty-one billion, two million, two hundred thirty-four thousand, one hundred one".

Divisors: 1 89 10093 34513 898277 3071657 348339709 31002234101