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2030131031 = 4149515391
BaseRepresentation
bin111100100000001…
…0101011101010111
312020111001100020012
41321000111131113
513124203143111
6533240430435
7101210554235
oct17100253527
95214040205
102030131031
11951a57545
12487a7841b
13264796b86
1415389d955
15bd36548b
hex79015757

2030131031 has 4 divisors (see below), whose sum is σ = 2079646464. Its totient is φ = 1980615600.

The previous prime is 2030130997. The next prime is 2030131063. The reversal of 2030131031 is 1301310302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1301310302 = 2650655151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2030131031 is a prime.

It is a super-2 number, since 2×20301310312 = 8242864006058245922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2030130997 and 2030131015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2030131091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24757655 + ... + 24757736.

It is an arithmetic number, because the mean of its divisors is an integer number (519911616).

Almost surely, 22030131031 is an apocalyptic number.

2030131031 is a deficient number, since it is larger than the sum of its proper divisors (49515433).

2030131031 is an equidigital number, since it uses as much as digits as its factorization.

2030131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49515432.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 2030131031 is about 45056.9753867256. The cubic root of 2030131031 is about 1266.2166594513.

Adding to 2030131031 its reverse (1301310302), we get a palindrome (3331441333).

The spelling of 2030131031 in words is "two billion, thirty million, one hundred thirty-one thousand, thirty-one".

Divisors: 1 41 49515391 2030131031