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31119426 = 23213132989
BaseRepresentation
bin111011010110…
…1100001000010
32011120000211100
41312231201002
530431310201
63030555230
7525340122
oct166554102
964500740
1031119426
1116625538
12a508b16
1365a7680
1441c0c82
152aea886
hex1dad842

31119426 has 24 divisors (see below), whose sum is σ = 72612540. Its totient is φ = 9575136.

The previous prime is 31119383. The next prime is 31119433. The reversal of 31119426 is 62491113.

It can be written as a sum of positive squares in 2 ways, for example, as 24354225 + 6765201 = 4935^2 + 2601^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31119426.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66261 + ... + 66728.

Almost surely, 231119426 is an apocalyptic number.

31119426 is an abundant number, since it is smaller than the sum of its proper divisors (41493114).

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

31119426 is a wasteful number, since it uses less digits than its factorization.

31119426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133010 (or 133007 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 31119426 is about 5578.4788249128. The cubic root of 31119426 is about 314.5409488833.

The spelling of 31119426 in words is "thirty-one million, one hundred nineteen thousand, four hundred twenty-six".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 132989 265978 398967 797934 1196901 1728857 2393802 3457714 5186571 10373142 15559713 31119426