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31113941 = 1091312179
BaseRepresentation
bin111011010110…
…0001011010101
32011112202022012
41312230023111
530431121231
63030514005
7525315125
oct166541325
964482265
1031113941
1116621401
12a505905
1365a5021
1441bcc85
152ae8e2b
hex1dac2d5

31113941 has 8 divisors (see below), whose sum is σ = 31653600. Its totient is φ = 30579120.

The previous prime is 31113923. The next prime is 31113947. The reversal of 31113941 is 14931113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31113941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13190 + ... + 15368.

It is an arithmetic number, because the mean of its divisors is an integer number (3956700).

Almost surely, 231113941 is an apocalyptic number.

It is an amenable number.

31113941 is a deficient number, since it is larger than the sum of its proper divisors (539659).

31113941 is a wasteful number, since it uses less digits than its factorization.

31113941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419.

The product of its digits is 324, while the sum is 23.

The square root of 31113941 is about 5577.9871817709. The cubic root of 31113941 is about 314.5224678390.

The spelling of 31113941 in words is "thirty-one million, one hundred thirteen thousand, nine hundred forty-one".

Divisors: 1 109 131 2179 14279 237511 285449 31113941