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3122130031 = 4496953519
BaseRepresentation
bin1011101000010111…
…1110110001101111
322001120211122020121
42322011332301233
522343231130111
61233450025411
7140240444626
oct27205766157
98046748217
103122130031
1113623a7559
12731718267
133a9aa5b27
142189186bd
1513416a871
hexba17ec6f

3122130031 has 4 divisors (see below), whose sum is σ = 3129084000. Its totient is φ = 3115176064.

The previous prime is 3122129987. The next prime is 3122130049. The reversal of 3122130031 is 1300312213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1300312213 = 3407381659.

It is a cyclic number.

It is not a de Polignac number, because 3122130031 - 213 = 3122121839 is a prime.

It is a super-2 number, since 2×31221300312 = 19495391860944121922, 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 = 3122129987 and 3122130014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122130091) 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, 3476311 + ... + 3477208.

It is an arithmetic number, because the mean of its divisors is an integer number (782271000).

Almost surely, 23122130031 is an apocalyptic number.

3122130031 is a deficient number, since it is larger than the sum of its proper divisors (6953969).

3122130031 is an equidigital number, since it uses as much as digits as its factorization.

3122130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6953968.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3122130031 is about 55876.0237579590. The cubic root of 3122130031 is about 1461.5611672094.

Adding to 3122130031 its reverse (1300312213), we get a palindrome (4422442244).

The spelling of 3122130031 in words is "three billion, one hundred twenty-two million, one hundred thirty thousand, thirty-one".

Divisors: 1 449 6953519 3122130031