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31034222020 = 2251551711101
BaseRepresentation
bin11100111001110010…
…001010010111000100
32222002211100211021101
4130321302022113010
51002024230101040
622131255025444
72146025351254
oct347162122704
988084324241
1031034222020
111218601137a
12602136b284
132c07724ba9
141705943964
15c1981a09a
hex739c8a5c4

31034222020 has 12 divisors (see below), whose sum is σ = 65171866284. Its totient is φ = 12413688800.

The previous prime is 31034222003. The next prime is 31034222039. The reversal of 31034222020 is 2022243013.

It can be written as a sum of positive squares in 2 ways, for example, as 6135275584 + 24898946436 = 78328^2 + 157794^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775855531 + ... + 775855570.

It is an arithmetic number, because the mean of its divisors is an integer number (5430988857).

Almost surely, 231034222020 is an apocalyptic number.

It is an amenable number.

31034222020 is an abundant number, since it is smaller than the sum of its proper divisors (34137644264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31034222020 is a wasteful number, since it uses less digits than its factorization.

31034222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551711110 (or 1551711108 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 31034222020 its reverse (2022243013), we get a palindrome (33056465033).

The spelling of 31034222020 in words is "thirty-one billion, thirty-four million, two hundred twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 1551711101 3103422202 6206844404 7758555505 15517111010 31034222020