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3781201031 = 15734077069
BaseRepresentation
bin1110000101100000…
…1000110010000111
3100202111222220200122
43201120020302013
530220441413111
61423112132155
7162462451466
oct34130106207
910674886618
103781201031
111670431333
1289639705b
134834b487a
1427c27a9dd
15171e55cdb
hexe1608c87

3781201031 has 8 divisors (see below), whose sum is σ = 3806940480. Its totient is φ = 3755482848.

The previous prime is 3781201019. The next prime is 3781201033. The reversal of 3781201031 is 1301021873.

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

It is a cyclic number.

It is not a de Polignac number, because 3781201031 - 214 = 3781184647 is a prime.

It is a super-2 number, since 2×37812010312 = 28594962473670925922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781201033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531365 + ... + 538433.

It is an arithmetic number, because the mean of its divisors is an integer number (475867560).

Almost surely, 23781201031 is an apocalyptic number.

3781201031 is a deficient number, since it is larger than the sum of its proper divisors (25739449).

3781201031 is a wasteful number, since it uses less digits than its factorization.

3781201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10633.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 3781201031 is about 61491.4712053631. The cubic root of 3781201031 is about 1557.9131957935.

The spelling of 3781201031 in words is "three billion, seven hundred eighty-one million, two hundred one thousand, thirty-one".

Divisors: 1 157 3407 7069 534899 1109833 24084083 3781201031