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3130122021 = 31380259539
BaseRepresentation
bin1011101010010001…
…1101111100100101
322002010212200012020
42322210131330211
522402302401041
61234333213353
7140365412115
oct27244357445
98063780166
103130122021
111366966004
12734331259
133ab643710
142199d9045
15134be8866
hexba91df25

3130122021 has 8 divisors (see below), whose sum is σ = 4494534240. Its totient is φ = 1926228912.

The previous prime is 3130121983. The next prime is 3130122053. The reversal of 3130122021 is 1202210313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3130122021 - 221 = 3128024869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130121021) 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, 40129731 + ... + 40129808.

It is an arithmetic number, because the mean of its divisors is an integer number (561816780).

Almost surely, 23130122021 is an apocalyptic number.

It is an amenable number.

3130122021 is a deficient number, since it is larger than the sum of its proper divisors (1364412219).

3130122021 is a wasteful number, since it uses less digits than its factorization.

3130122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80259555.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3130122021 is about 55947.4934291073. The cubic root of 3130122021 is about 1462.8072000451.

Adding to 3130122021 its reverse (1202210313), we get a palindrome (4332332334).

The spelling of 3130122021 in words is "three billion, one hundred thirty million, one hundred twenty-two thousand, twenty-one".

Divisors: 1 3 13 39 80259539 240778617 1043374007 3130122021