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16130031 = 319436581
BaseRepresentation
bin111101100001…
…111111101111
31010100111020120
4331201333233
513112130111
61333420023
7254050221
oct75417757
933314216
1016130031
119117805
12549a613
133459ac8
1421dc411
151639406
hexf61fef

16130031 has 16 divisors (see below), whose sum is σ = 23168640. Its totient is φ = 9948960.

The previous prime is 16130027. The next prime is 16130041. The reversal of 16130031 is 13003161.

It is not a de Polignac number, because 16130031 - 22 = 16130027 is a prime.

It is a super-2 number, since 2×161300312 = 520355800121922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16130021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840 + ... + 5741.

It is an arithmetic number, because the mean of its divisors is an integer number (1448040).

Almost surely, 216130031 is an apocalyptic number.

16130031 is a deficient number, since it is larger than the sum of its proper divisors (7038609).

16130031 is a wasteful number, since it uses less digits than its factorization.

16130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6646.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 16130031 is about 4016.2209849559. The cubic root of 16130031 is about 252.6649890550.

Adding to 16130031 its reverse (13003161), we get a palindrome (29133192).

The spelling of 16130031 in words is "sixteen million, one hundred thirty thousand, thirty-one".

Divisors: 1 3 19 43 57 129 817 2451 6581 19743 125039 282983 375117 848949 5376677 16130031