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3131001330 = 235104366711
BaseRepresentation
bin1011101010011111…
…0100100111110010
322002012112100101020
42322213310213302
522403014020310
61234404120310
7140406033522
oct27247644762
98065470336
103131001330
111367406706
12734696096
133ab890a12
14219b87682
15134d1e170
hexba9f49f2

3131001330 has 16 divisors (see below), whose sum is σ = 7514403264. Its totient is φ = 834933680.

The previous prime is 3131001329. The next prime is 3131001331. The reversal of 3131001330 is 331001313.

It is an interprime number because it is at equal distance from previous prime (3131001329) and next prime (3131001331).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (3131001331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52183326 + ... + 52183385.

It is an arithmetic number, because the mean of its divisors is an integer number (469650204).

Almost surely, 23131001330 is an apocalyptic number.

3131001330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3131001330 is an abundant number, since it is smaller than the sum of its proper divisors (4383401934).

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

3131001330 is a wasteful number, since it uses less digits than its factorization.

3131001330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104366721.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 3131001330 is about 55955.3512186279. The cubic root of 3131001330 is about 1462.9441637270.

Adding to 3131001330 its reverse (331001313), we get a palindrome (3462002643).

The spelling of 3131001330 in words is "three billion, one hundred thirty-one million, one thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 104366711 208733422 313100133 521833555 626200266 1043667110 1565500665 3131001330