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3131001992 = 232111854859
BaseRepresentation
bin1011101010011111…
…0100110010001000
322002012112101021202
42322213310302020
522403014030432
61234404123332
7140406035456
oct27247646210
98065471252
103131001992
111367407158
12734696548
133ab891101
14219b879d6
15134d1e462
hexba9f4c88

3131001992 has 16 divisors (see below), whose sum is σ = 5898454800. Its totient is φ = 1558080720.

The previous prime is 3131001889. The next prime is 3131002019. The reversal of 3131001992 is 2991001313.

3131001992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925742 + ... + 929117.

It is an arithmetic number, because the mean of its divisors is an integer number (368653425).

Almost surely, 23131001992 is an apocalyptic number.

It is an amenable number.

3131001992 is a deficient number, since it is larger than the sum of its proper divisors (2767452808).

3131001992 is a wasteful number, since it uses less digits than its factorization.

3131001992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855076 (or 1855072 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 3131001992 is about 55955.3571340582. The cubic root of 3131001992 is about 1462.9442668324.

The spelling of 3131001992 in words is "three billion, one hundred thirty-one million, one thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 211 422 844 1688 1854859 3709718 7419436 14838872 391375249 782750498 1565500996 3131001992