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3133212020 = 2251131386377
BaseRepresentation
bin1011101011000001…
…0000010101110100
322002100200122212122
42322300100111310
522404100241040
61234523335112
7140433601631
oct27260202564
98070618778
103133212020
111368686624
12735381498
133ac186013
1421a1a1188
151351091b5
hexbac10574

3133212020 has 24 divisors (see below), whose sum is σ = 6637977864. Its totient is φ = 1242192896.

The previous prime is 3133211999. The next prime is 3133212041. The reversal of 3133212020 is 202123313.

It is an interprime number because it is at equal distance from previous prime (3133211999) and next prime (3133212041).

It can be written as a sum of positive squares in 4 ways, for example, as 438148624 + 2695063396 = 20932^2 + 51914^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3133212020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690929 + ... + 695448.

It is an arithmetic number, because the mean of its divisors is an integer number (276582411).

Almost surely, 23133212020 is an apocalyptic number.

It is an amenable number.

3133212020 is an abundant number, since it is smaller than the sum of its proper divisors (3504765844).

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

3133212020 is a wasteful number, since it uses less digits than its factorization.

3133212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386499 (or 1386497 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3133212020 is about 55975.1017864193. The cubic root of 3133212020 is about 1463.2883938764.

Adding to 3133212020 its reverse (202123313), we get a palindrome (3335335333).

The spelling of 3133212020 in words is "three billion, one hundred thirty-three million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 113 226 452 565 1130 2260 1386377 2772754 5545508 6931885 13863770 27727540 156660601 313321202 626642404 783303005 1566606010 3133212020