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31059269 = 231350403
BaseRepresentation
bin111011001111…
…0110101000101
32011102222022022
41312132311011
530422344034
63025412525
7524666543
oct166366505
964388268
1031059269
111659431a
12a49a145
136586187
1441a6d93
152ad7b2e
hex1d9ed45

31059269 has 4 divisors (see below), whose sum is σ = 32409696. Its totient is φ = 29708844.

The previous prime is 31059239. The next prime is 31059271. The reversal of 31059269 is 96295013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96295013 = 671437239.

It is a cyclic number.

It is not a de Polignac number, because 31059269 - 28 = 31059013 is a prime.

It is a super-2 number, since 2×310592692 = 1929356381628722, 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 (31059239) 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, 675179 + ... + 675224.

It is an arithmetic number, because the mean of its divisors is an integer number (8102424).

Almost surely, 231059269 is an apocalyptic number.

It is an amenable number.

31059269 is a deficient number, since it is larger than the sum of its proper divisors (1350427).

31059269 is a wasteful number, since it uses less digits than its factorization.

31059269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350426.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 31059269 is about 5573.0843345494. The cubic root of 31059269 is about 314.3381383132.

The spelling of 31059269 in words is "thirty-one million, fifty-nine thousand, two hundred sixty-nine".

Divisors: 1 23 1350403 31059269